Momo Yaoyorozu/Synopsis

History
Momo was born into a famous hero family, gaining a powerful Quirk as a result. Due to the vast wealth of her family, she had access to various objects to study and practice within her home as a child, with the Russian matryoshka dolls being her favored tool for Quirk training.

Quirk Apprehension Test Arc
Having gained entry to U.A. High through recommendations, Momo Yaoyorozu attends the first day of school with Class 1-A. Their homeroom teacher Shota Aizawa immediately brings the class to the training field for a Quirk Apprehension Test and claims that whoever comes in last will be expelled.

Momo manages to score first place in the entire class while Izuku Midoriya comes in last. Shota then reveals that he was lying about expelling the last-place student to make sure the students did their best. Seeing everyone's shocked reaction to the news, Momo tells them she's surprised they didn't realize that earlier and says she should have mentioned it.

Battle Trial Arc
Momo answers one of Present Mic's questions in English class the next morning. That afternoon, Class 1-A participates in combat training for their Hero Basic Training class taught by All Might. They meet him at training ground beta after changing into their hero costumes. He splits them up into teams of two and has them simulate a hero versus villain situation. Momo ends up paired with Minoru on Team C.

Following the first battle trial, All Might states Tenya Ida was the best in the battle despite his team's failure. He asks the students why this is the case and Momo responds. She replies that Tenya embraced the spirit of the trial while Ochaco let her guard down, Izuku rendered himself helpless and Katsuki's judgment was clouded by a grudge. She goes on to say that she and her classmates must devote themselves wholeheartedly if they wish to become Pro-Heroes.

U.S.J. Arc
The next day in homeroom class, Shota tells the class they need to choose their Class President. The class follows Tenya's suggestion of voting for the president and Momo gets the second most votes behind Izuku. To her dismay, she is made Vice-President while Izuku becomes the Class President. However, when it comes time to decide who the Class Officers will be, Izuku decides to give his role to Tenya. This leaves Momo discouraged because she still believes that she should be the representative. Later on, Shota announces to the Class that they will partake in rescue training at an outside facility.

During the bus trip to the aforementioned facility, Momo tells Ochaco that the argument between Katsuki and others is too vulgar. Class 1-A arrives at the Unforeseen Simulation Joint, where they meet the Space Hero: Anan Kurose. Anan Kurose explains she developed the U.S.J with the focus on training future heroes on using their Quirks to help others. Suddenly during Anan Kurose's speech, real villains invade the facility through a warp gate. Shota fends off the villains on his own and leaves Anan Kurose to evacuate with the class. They prepare to escape, but they are cut off by the villain Kurogiri. Katsuki and Eijiro attack him, but end up dealing no damage. Kurogiri responds by warping the class to the various areas in the facility. Momo is warped to the Mountain Zone along with Kyoka and Denki. She uses her Quirk to create a metal staff for herself and a sword for Kyoka to defend themselves.

While they're surrounded by villains, Denki mentions that he cannot shoot out his electricity or else he'll shock the girls too. Annoyed, Kyoka kicks him into a villain so that he can electrocute them. Another villain tries to get the jump on them, but Momo uses her Quirk to trap him in a net and he falls into Denki's electrical field as well. Momo creates a sheet of insulation to protect herself and Kyoka. She tells Denki he can attack without restraint and so he blasts the villains with an electric attack, and ends up destroying most of Momo's shirt. Kyoka points this out, but Momo replies that she can simply make new clothes.

Denki's Quirk renders him helpless after he overuses it, leaving him open to an electric villain hiding underground. He warns Momo and Kyoka to surrender and threatens to kill Denki. Momo notices Kyoka trying to distract him while using her Quirk, but he quickly becomes wise to her act. Before it's too late, the trio is saved when the Pro Heroes arrive at the facility. Snipe uses his Quirk to shoot the villain multiple times to free Denki. Then Ectoplasm arrives to escort the students out and take the villains into custody. Afterward, Detective Tsukauchi takes Class 1-A back to U.A. High.

U.A. Sports Festival Arc
Two days after the attack on the U.S.J., Momo and her classmates return to school to discuss the attack. After Shota returns to class, the students get lectured about the importance of the upcoming U.A. Sports Festival. Momo mentions that she's excited about the opportunity to get scouted. For the next two weeks before the festival, Momo trains by reading up on the molecular structures of the items she can create. The day of the U.A. Sports Festival arrives and Momo changes into her P.E. clothes and prepares with her classmates in their designated waiting room. Like the rest of her peers, Momo takes notice when Shoto challenges Izuku.

Chief referee of the Sports Festival: Midnight announces the preliminaries will be an Obstacle Race four kilometers around the stadium, which immediately begins after the rules are explained. The students begin the race jam-packed inside a narrow corridor. Shoto freezes the tight space and gets out to an early lead, but Momo and others use their Quirks to avoid it.

They all reach the first obstacle, which is a blockade of giant villain bots. Momo uses her Quirk to create a cannon and effectively shoots all of them down to clear the path. After reaching the minefield, Momo is attacked by Minoru, who uses his Quirk to stick to her back and piggy-back on her all the way to the finish line. She finishes in seventeenth place while carrying Minoru against her will. After completing the race, she tells him that he is the worst. This qualifies them both for the second event: The Cavalry Battle.

Shoto chooses Momo for his team along with Denki and Tenya. He tells Momo that her role on the right-wing provides insolation and defense for the team. She creates skates for herself and Denki so that the team can move very quickly and take advantage of Tenya's speed in the front of the formation. Towards the middle of the event, Team Todoroki confronts Team Midoriya for their ten million point headband.

They attack Team Midoriya at the same time as many other teams. Shoto orders Momo to ready her Quirk to protect them from Denki's lightning. She also creates a stone staff for Shoto to use. Denki electrocutes the other teams and Shoto uses the staff and his ice powers to freeze them all in place. Fumikage was able to defend against Denki's attack, giving Team Midoriya the chance to flee. Team Todoroki proves to be too fast for them to get away. Fumikage attacks with his Dark Shadow to stop their pursuit, but Momo defends Shoto by creating a block of stone to impede Dark Shadow's attack. Team Todoroki corners their opponent, but Team Midoriya is able to keep away from them by exploiting Shoto's weakness and keeping to his left side.

With only a minute left in the competition, Tenya decides to use his Recipro Burst technique to steal the ten million point headband. In an instant, Shoto grabs the points by using Tenya's burst of super speed. Although, it renders the team immobile afterward since Tenya's engines become stalled. Team Midoriya attacks in a last-ditch effort to get their points back but ends up grabbing the incorrect headband. Momo mentions that they mixed up the headbands knowing Team Midoriya would underestimate them. Once the Cavalry Battle concludes, Team Todoroki finishes in first place and all their members move on to the finals: a one on one fighting tournament. Tenya apologizes for nearly costing them the competition, and Momo encourages him by saying he's the reason they won at all.

Prior to the finals, all the participants are allowed an intermission for recreational games and rest. Momo goes to get food with Kyoka and they're both told by Denki and Minoru that they must dress up as cheerleaders for the cheer battle. Momo believes them and makes cheerleading outfits for the girls in Class 1-A, but this turns out to just be a prank from the boys. Momo yells at them and then falls into dismay for falling into their scheme. Midnight calls all the students to draw lots for the fighting matchups and Mashirao suddenly decides to withdraw from the tournament, surprising Momo and others. He explains that he was simply Hitoshi's puppet and doesn't wish to advance, and he also questions why the girls are dressed like cheerleaders. Momo and the girls are embarrassed by this.

Momo ends up matched up against Fumikage for the sixth battle. Fumikage promises to give it his best, which Momo appreciates. During the recreational games, Momo reluctantly cheers with the other girls. The first round's sixth fight eventually arrives and Momo takes the stage to face Fumikage. She is visibly nervous for their bout since Fumikage's Quirk allows him to effectively attack and defend. She ponders over a strategy to defend herself by creating a shield, but she's interrupted when the battle suddenly starts.

Fumikage calls Dark Shadow to attack immediately and Momo blocks it with a shield just like she planned. She tries to follow up by making a weapon, but Dark Shadow keeps pressuring her by attacking her shield repeatedly. She's unable to focus on her Quirk until Fumikage mysteriously stops attacking. Momo creates a metal staff and prepares to counterattack until Midnight points out that she's pushed out of bounds. Fumikage is named the victor in the quickly ended bout, greatly disappointing Momo.

Momo watches the rest of the matches from the stands alongside her peers. She and Mina wonder why Fumikage is put on the defensive during his battle with Katsuki since he defeated them both so easily. After Katsuki wins the Sports Festival, Momo joins her peers for the closing ceremony.

Vs. Hero Killer Arc
Class resumes in U.A. two days after the Sports Festival. Momo joins her class in learning about Hero Informatics during homeroom. Shota reveals the Pro-Hero draft results, with Momo receiving one-hundred and eight offers from pros. Midnight joins the class to help the students choose their hero names. Momo chooses the moniker Everything Hero: "Creati".The students are given personalized lists of hero agencies they are to choose from along with their nominations. When the internship week arrives, Momo and her class meet at the train station.

Momo chooses Uwabami's Hero Office to intern at along with Itsuka Kendo from Class 1-B. They both arrive in the middle of Uwabami shooting a commercial. Itsuka mentions that she was hoping for something more heroic to then watching that, but Momo emphatically replies that garnering popularity is unavoidable as a hero and she will take any lesson Uwabami has for them. Itsuka takes note of Momo's enthusiasm and then asks if there's anything else they can do during the commercial. Uwabami responds by admitting that the main reason she chose them as interns is that because they're both cute, making both Momo and Itsuka slightly taken back by their new mentor's response.

They later accompany Uwabami to one of her photoshoots. Itsuka mentions how she feels more like an entourage than her interns. Momo replies that there must be some kind of lesson they're missing, but Itsuka believes Momo is in denial. A few days later, Itsuka and Momo appear in a commercial for UNERI Hairspray with Uwabami. The Snake Hero shows them both a demo tape of the ad, but Momo appears to only be embarrassed by this. Uwabami decides to take them both on patrol afterward, much to their excitement.

Momo returns to school following the conclusion of her internship. When Izuku, Shoto, and Tenya's run-in with the Hero Killer is brought up during class, Momo mentions that she was worried about the boys. She attends Basic Hero Training with her class afterward where the class participates in a rescue training race. While the first group prepares to go, Momo tells Kyoka she believes Izuku is at a disadvantage because of his lack of mobility. She's quickly proven wrong when Izuku jumps out to an early lead using the new mastery over his Quirk, much to Momo's shock and amazement. She watches as he maintains the lead until he trips causing him to lose.

After class, she joins her female peers inside the girl's locker room. Minoru tries to peep on them using a hole in the wall but Kyoka stops them. Momo notes how cowardly and vile Minoru's action was. She thanks Kyoka for stopping him and says they need to plug the hole immediately.

Final Exams Arc
One week prior to final exams, Denki and Mina discuss how worried they are for the written portion. Momo placed first in the midterms and she says she's more than willing to help them study. Unlike them, she's much more worried about the practical portion. Kyoka, Hanta, and Mashirao ask for her help as well. Momo blushes with great pride and excitement. She gracefully says she's excited to help them and will hold a study session over the weekend at her residence. She begins monologuing about how she'll have her mother set up the great hall with tea for the study session. Her peers notice her accidental bragging, but they don't care because they know that she's so excited and bouncy that she doesn't even know she's bragging about her wealth.

They all eventually meet up at the Yaoyorozu's giant, fancy estate, where Momo helps them study. Thanks to her guidance, Denki and Mina feel they do well on the three days of written tests. The day of the practical arrives following the three days of written tests and Class 1-A meets up with many of the teachers at the central plaza of the exam arena.

The students believe they'll be fighting villain bots for the finals, so Kyoka asks Momo why so many teachers need to be present. Shota and Principal Nezu reveal that this actually won't be the case. Momo is surprised that the teachers are changing the format for the first time. Nezu explains that in order to better prepare the students for real-life encounters with villains, they will be paired off and matched up against one of the teachers. Momo and Shoto are paired up against Shota.

A few days before the practical, the teachers met to discuss the change. Shota mentions that he will face Momo and Shoto to exploit their weakness since they both rely too heavily on their powerful Quirks. Back at the central plaza, all of the matchups are revealed in order. Momo and Shoto are set to face their homeroom teacher in the fourth practical battle. They will be allotted thirty minutes to either capture him or escape the battle stage through an escape gate. All teachers will wear compressed weights to give the students a handicap.

Momo waits by herself in an isolated room while the first two battles commence. Fumikage and Tsuyu manage to defeat Ectoplasm in the second battle. Momo says to herself that she's not surprised, and has a flashback of her embarrassing defeat at the hands of Fumikage before exiting the room. She meets up with Shoto in a replica city just before their exam begins. Shoto catches her daydreaming and asks if she's nervous. He admits he doesn't blame her since they're up against Shota and says not to worry because he has a plan for them to win.

Their practical battle begins as they run through the fake city. Shoto explains his plan is for Momo to create small objects so once she's unable to keep producing them they will know Shota is close by. Shoto plans to draw him in so Momo can run through the escape gate, and tells her to stay close to him until then. Momo reluctantly goes along with it since she's lost confidence in her own ability to make decisions.

She begins making matryoshka dolls and praises Shoto for his quick thinking, telling him that although they were both let in on recommendations, Shoto's shown more practical skills for being a Pro-Hero. She admits that she only followed his orders in the Cavalry battle and that she was swiftly exposed as a weakling when it was her turn to fight. Shoto interrupts when he notices Momo's stopped producing the dolls. She apologizes, but it's too late as Shota has already found them both.

Momo runs away on Shoto's command, starting to panic and several indecisive thoughts run through her head. Her lack of confidence is even evident to Shota himself, who quickly catches up to her. He uses his capturing weapon to grab her arm, but she notices her Quirk isn't erased and uses it to free herself. She runs in the opposite direction back towards Shoto. She finds him hanging from a light post, restrained by Shota's capturing weapon. She apologizes but Shoto warns her that Shota is fast approaching.

She begins to panic again, unable to decide whether to run or save Shoto. He asks her if she has a plan and apologizes for not asking her beforehand. Momo says it won't work since his plan failed earlier. Shoto encourages her to trust her instincts because he believes she's better at leading their team than he is. He even admits that he voted for her to be Class President because he felt she would be best at leading the class. Shoto's encouragement helps Momo believe in herself and she realizes how disgraceful she's been acting.

Shota eventually reaches them and asks if Momo's given up. She responds that she hasn't and warns Shoto to close his eyes. She throws the dolls at Shota and he hits them, triggering the flash bombs inside them. Momo uses the opening to free Shoto from his restraints and announces that she does have a plan to take advantage of Shota's weakness. They both run away from Shota as Momo explains that his Quirk has been unstable since his injuries fighting Nomu.

They rush down a street as Shota attacks them again with his capturing weapon. Momo mentions that passing the exam is all a matter of timing. Shoto questions how timing is relevant if Shota can take away their Quirks at any given time. Momo thinks to herself that Shoto's wrong to believe that Shota can keep their powers erased. Just as Momo expects, Shoto's Quirk returns to him in time for him to use his Heaven-Piercing Ice Wall technique to block off Shota's pursuit of them.

Momo creates a weapon similar to Shota's using her Quirk and explains her full plan to Shoto. He agrees with her and they go through with it together. They run from behind the ice wall wearing cloaks. Shota attacks them, but the upper halves are only mannequins and a catapult was hidden under the cloak as well. Momo tries to trigger it and shoot the cloth at Shota, but she misses. Shota backs off anyway, giving her a chance to trigger it. She orders Shoto to blast his flames and explains that the weapon is made of nitinol alloy and when it's heated it returns to its original shape instantly. This traps Shota in an instant, allowing Momo and Shoto to handcuff him and pass the exam.

Shoto mentions that her plan went a bit too smoothly. Momo replies that she messed up by missing the initial trigger, and believes that Shota may have let them win. Shota explains that he was simply distancing himself from Shoto since he was still covered with a cloth, and this is what lead him directly into her trap. Shoto realizes it was a matter of timing all along and thanks Momo. She's overwhelmed with emotion and begins to cry. Shoto asks what's wrong, but she tells him it's nothing. He tells her there's a pressure point on her foot if she's feeling nauseous, and she tearfully tells him again that it's nothing.

Momo watches the remaining exams from the monitoring room. During Denki and Mina's battle with Nezu, Momo deduces that the principal is predicting his opponent's moves and planning his attacks through specific calculations using his Quirk. Momo, Tenya, Izuku, and Tsuyu are shocked when his sadistic attitude comes out during the match. Ochaco enters the room and is shocked to find that Mina and Denki fail the exam, which Momo confirms to her.

Koji and Kyoka are able to pass thanks to the former's Quirk, but everyone in the room is disgusted that he attacked Present Mic with bugs. Mezo and Toru pass as well. Momo mentions that Toru is unmatched when it comes stealth ops. Momo isn't amused to watch Minoru run from Midnight during their battle, but she's pleasantly surprised to see him pass. All Might proves to outmatch Katsuki and Izuku in their fight. Momo and the others watch in horror until Izuku carries Katsuki through the escape gate.

Class 1-A returns to homeroom class following the conclusion of finals. They're given the next day off and Shota reveals that everyone will be going to training camp in the woods over summer break. Most of Class 1-A decides to go shopping together at the Kiyashi Ward Shopping Mall to buy necessities for the forest lodge. At the shopping mall, Kyoka says that she wants to buy a duffel bag and Momo replies that she will help her look for it.

My Hero Academia: Two Heroes
Momo's family got invited because her family has stock in some of the I-Expo's sponsors. She got to bring Kyoka and Ochaco as she had two extra invites. She also brought along Tsuyu, Mina, and Toru to I-Island but was not allow to see the preview of I-Expo.

While looking around the expo, she, Kyoka, and Ochaco see Izuku talking with Melissa Shield, and suspect that they are on a date. Izuku clears up the misunderstanding and says that Melissa is showing him around the expo. After, the five go get tea at a café, and are surprised to see Denki Kaminari and Minoru Mineta, who are working as extra staff at the cafe. They soon meet Tenya, who is representing his family, reprimanding Denki and Minoru for slacking off.

They notice an explosion nearby, and the group finds out about the Villain Attack attraction, where they see Eijiro and Katsuki participating. Katsuki notices Izuku and is irritated, making a scene in front of the audience. Melissa watches in amazement at the young heroes around her, while Momo, Kyoka, and Ochaco express embarrassment at Katsuki's crude behavior.

Melissa invites the students to attend the reception party at 6:30 PM, and Momo helps choose formal clothes for Kyoka and Ochaco. The students are stunned at their formal clothes, embarrassing Kyoka and Ochaco. However, the I-Island Security System sets off an alarm across the whole island, locking the central tower from the outside. Because their cell phones have no signal and the elevators are disabled, Izuku tells everyone to head over to the party because that's where All Might is.

They learn that the villain Wolfram has the island held hostage, and Tenya suggests that the students escape since they can't legally fight villains. Melissa, however reveals that I-Island's security is on par with Tartarus's. Shoto and Kyoka believe that they should try to help while Minoru and Momo believe they can't. Awkward silence is interrupted when Izuku says he wants to save everyone. After discussing among themselves, everyone agrees to try to help the heroes by disabling the security system.

They scale over fifty floors before being blocked by a closed shutter on the 80th floor. Minoru accidentally opens the door to the main section of the floor, notifying the villains. Before the shutters could close them off from both ends, Tenya and Shoto make an opening and lead the group into the plant factory. Kyoka notices the elevator coming up, so they hide. The villains in the elevator notice and attack Katsuki and Eijiro, who were lost. Shoto saves them and lifts the rest of the group up using an ice pillar.

The group find a small roof panel that leads to the maintenance room, and convince Minoru to help them get up there. He succeeds, and the group advances past the 100th floor. They notice that the shutters are closed and deduce that the villains are trying to lead them somewhere, which turns out to be a swarm of security bots on the 130th floor. Denki attacks first with his Indiscriminate Shock 1.3 Million Volts, it turns out ineffective against the robots, so they resort to using Momo's smoke bombs. Izuku and Tenya use their power to break through the robot blockade. Tenya rescues the short-circuited Denki while Kyoka listens for more enemies.

In the server room on the 138th floor, the group agrees to stay back and fight the incoming security bots while Izuku, Melissa, and Ochaco continue up. Tenya uses his Recipro Burst and Momo creates a cannon that fires adhesive material. However, Tenya, Minoru, and Momo pushed themselves to their limits, so they are restrained by the robots. They are set free when Melissa overrode the security system, and they head to the top of the tower. There, they encourage All Might and Izuku as they fight Wolfram, and cheered after his defeat. Momo is later seen hanging out with her classmates at a barbeque party.

Forest Training Camp Arc
A day prior to summer break, Momo and the girls enjoy themselves at the U.A. school pool. The boys come afterward for endurance training. Momo and the girls offer to help officiate the boys swim races before they're all kicked out by Shota.

Summer break begins and Class 1-A rides a bus to a forest reserve belonging to the hero team: The Wild, Wild Pussycats. Pixie-Bob and Mandalay introduce themselves and challenge the students to reach base camp past the forest in three hours. When most of Momo's peers refuse, she and her class are forcibly thrown into Beast's Forest by Pixie-Bob's Quirk. The students are attacked by dirt monsters created by Pixie-Bob, with Momo working together with Toru, Mina, and Koji to destroy several of the beasts by creating a cannon to shoot them.

Class 1-A doesn't arrive at base camp for several more hours. Well over their time limit, Class 1-A arrives at the base camp exhausted and battered. Mandalay reveals the time limit was the expectancy for actual heroes, not the students. The Pussycats serve the student's dinner and the girls bathe in the hot springs afterward. Minoru tries to peep on them and the girls are grateful when Kota stops him.

Training begins the next day. Momo trains her Quirk by constantly eating sweets while creating dolls at the same time. Later that day, the students are tasked with cooking curry for themselves. Mina and Ochaco ask Shoto to light the fire for their oven. Momo comments that they shouldn't rely on him and they need to learn to make fires for themselves. She creates a torch lighter to light her oven.

Following the next day of training, Momo is paired up with Yuga for a test of courage presented by the Pussycats. Minoru tries to trade partners with Yuga but he refuses. Class 1-A students traverse the forest while Class 1-B students try and scare them in the dark. Their fun event is interrupted by the arrival of the League of Villains' Vanguard Action Squad. The forest is filled with poison gas. Momo creates gas masks and rushes through the forest, handing them out to all the students. She joins up with Yosetsu so he can guide her to the students in Class 1-B. Momo leaves Yuga behind to watch over Kyoka and Toru, who have both been poisoned.

A rampaging Nomu eventually attacks Momo and Yosetsu. Momo suffers a serious head injury and she wakes up to Yosetsu carrying her while running away from the monster. Nomu is recalled by Dabi before it gets the chance to kill the students. Momo surmises that the villains have likely captured Katsuki and makes a tracking device for Yosetsu to stick to Nomu with his Quirk.

The Vanguard Action Squad successfully captures Katsuki and escapes with most of their members.

Hideout Raid Arc
Momo is taken to the hospital and treated for her injuries. After recovering, she meets with All Might and Detective Tsukauchi in her hospital room. She tells them about the tracking device and gives them a receiver to track the signal. All Might commends her judgment and promises to handle the situation himself.

The next day later that night, Shoto along Eijiro wait for Izuku and Momo. Izuku and Momo arrive but before Momo can speak, Tenya appears. He is angry that they are about to repeat the same mistake he made at Hosu. Despite Izuku knowing that breaking the rules is against the law, Tenya punches Izuku in the face. Tenya is angry and frustrated that they are not taking his concerns, feelings and worry into consideration; Tenya says that he doesn't want to see Izuku or any of them land up with severe injuries.

Shoto tells Tenya that they will not engage the villains in combat while Eijiro states that their rescue will be covert. Momo states that she came along to accompany them all in order to prevent them from engaging in combat. Izuku tells Tenya that after failing to save Katsuki at the training camp, his gut feeling is telling him that he must save Katsuki. Tenya sees that they are determined and resolute and is cheered up by the fact that they won’t engage in combat; Tenya decides to go with them.

Momo along with Izuku, Eijiro, Tenya and Shoto travel by train to the city where Momo's tracking device detects the villain with her button beacon. After putting on disguises, they head towards the League of Villains' hideout. They continue towards the place that Momo's tracking device is detecting. After waiting for a while near the place, Momo notes that the villains have made no movements and states the possibility of Katsuki not being in the place while Tenya reminds them that if he sees any combat, then he will not hesitate to stop them.

Afterwards, Momo, Tenya, Shoto, Eijiro, and Izuku prepare to infiltrate the supposed League of Villains’ hideout. The group go to the back of the hideout and see a window. Momo acts as recon while Izuku and Eijiro see what is inside with the night-vision goggles Eijiro brought along. Suddenly, Mount Lady destroys the front of the warehouse which shocks Momo. Seeing that the Pro Heroes are at the warehouse, Momo and the group assume that All Might is with Katsuki as they are speaking and decide to head home.

Suddenly, the entire warehouse is completely destroyed by a man along with the surrounding area being significantly damaged. She was paralyzed by fear due to All For One's overwhelming presence and is unable to move. As the battle between All Might, All For One, Katsuki and the League of Villains continue, Izuku comes up with an idea and explains his plan to Momo and the group. She watches as Izuku, Eijiro, and Tenya enact the plan Izuku came up with, which allows them to rescue Katsuki. Seeing that Izuku, Eijiro, and Tenya have succeeded in rescuing Katsuki, Shoto and Momo begin escaping from the battlefield.

Shoto later phones Izuku and finds out that him and his group are at the train station. After All Might defeats All For One, Momo and Shoto meet up with Izuku and his group. They take Katsuki to a Police Station for his safety. Afterwards, Momo goes home.

Provisional Hero License Exam Arc
Following Katsuki’s rescue and the retirement of All Might, Nezu ordered the construction of the Height Alliance, buildings to house the students, and thus protect them.

When Class 1-A is introduced to their dorms, Shota Aizawa states they must start preparing to get provisional hero licenses like they had planned to during the training camp. Before they can enter, Shota reads the riot act against Izuku, Tenya, Momo, Eijiro, and Shoto for participating in the Katsuki’s rescue, breaking the rules in the process, and the others who did nothing to stop them from doing it through the proper channels, stating that aside from Katsuki, Toru and Kyoka, he would have expelled all of them for their actions, if it weren't for All Might's sudden retirement. Shota advises the five who went to Kamino Ward to go through the proper procedures next time which will also restore the trust between them.

Momo and the other students explore the dorms, and she comments that her room is smaller than her closet. Later that night, after everyone arranged their luggage in their respective bedrooms, the girls of Class 1-A suggest a room showcasing competition. She checks the boys' rooms, being especially impressed by Rikido Sato baking skills. When they check her room, everyone is surprised to see how luxurious and lavish it is but also cramped. Momo's room has a very large bed in it and with very little space because she miscalculated the space. Back in the common space on the first floor, she votes Rikido Sato the winner, solely because of his cake.

After the competition, at Ochaco's urgings, She along with Izuku, Shoto, Tenya, and Eijiro all meet outside the dorm where they find her with Tsuyu. Tsuyu apologizes for harshly doubting their plan to save Katsuki, and they apologize for worrying her and they mend their friendship.

The next day, Class 1-A begin their school life anew. In Class 1-A's room, Shota Aizawa mentions that their first objective will be earning their "Provisional Hero Licenses". To prepare for the Provincial Hero License exam, Class 1-A students will create at least two signature Super Moves that they will use in combat, with his help and that of Cementoss, Ectoplasm, and Midnight. She mentions she is having trouble performing the special move she has in mind.

The day of the licensing exam arrives and Class 1-A travels to the National Dagobah Arena. There, they meet students from Shiketsu High School and Ketsubutsu Academy High School. The exam participants all gather to hear the rules of the exam. Each student has six balls, and three targets to attach to their body. Those whose targets have been hit are disqualified. Participants need to eliminate two students to move on to the next phase of the exam.

The room in which the students are in unfolds to reveal the arena, in which there are varying environments to battle in. As the exam starts, the rest of the schools all attack U.A. at once, however, Class 1-A is able to defend themselves thanks to their ultimate moves. Momo create some shield to protect Toru, Tsuyu and herself. Yo Shindo tells his fellow classmates that he will shatter their solid defense, and uses his Vibrate Quirk on the ground, attacking with his super move Tremoring Earth that completely shatters the ground and causing members of class 1-A to disperse.

Class 1-A students get scattered, and have to defend himself from the other students while looks for his classmates. Momo regroups with Kyoka, Tsuyu and Mezo. They go to the city area and enter a building after failing to find the rest of their classmates. However, once there they fall into an ambush prepared by Saiko Intelli from Seiai Academy.

Putting Saiko's plan into action, her classmates trap the four in a room, closing it completely and sealing off Mezo and Kyoka's Quirks that are good for detecting people. Momo realizes that she and the others are dealing with highly intelligent opponents who have been able to correctly predict all of their moves thus far. Then, they incapacitate Tsuyu by cooling the hallway down excessively using the air conditioning system, causing her to start hibernating due her Frog Quirk.

Momo makes a blanket for Tsuyu to try and keep her warm. A Seiai student welds one of the doors to the hallway shut, leaving only one door for the U.A. students. Momo predicts that their opponents are behind that door and that it would be dangerous for them to try to break through. Momo considers what she can do to help with the cold air, and decides she could create some clay to block the vents. However, she realizes the foe’s plan is. Momo deduces that she adds the most uncertainty to Saiko's planning, and thus their opponents are trying to remove her from the equation.

Momo comes up with a plan. After reading her book, she creates four headphones and a large amp. Saiko readies her allies to storm the room but is surprised when her rival students counter with a high-frequency sonic wave attack, knocked out all of the Seiai students except Saiko. Class 1-A students leave the room to find Momo's plan was successful.

Saiko, hiding behind the door, grabs Momo back into the hallway and locks the doors behind her. With Momo weakened due to the strain caused by an extended usage of her Quirk, Saiko attempts to use her balls on Momo's targets. Momo creates a pair of handcuffs to restrain one of Saiko's arms, and as Saiko attacks with her other arm, Momo's friends break through the door and Tsuyu restrains Saiko's other arm with her tongue. After questioning why Momo's friends would return to help her when she surely would have been defeated, Saiko admits defeat.

Having knocked out at least enough Seiai students for all of them to pass, the four U.A. students head for the winner's waiting room..There they met up with Shoto and discover that they're the only ones who have passed so far from their class. Minutes later Izuku, Ochaco, Hanta, Katsuki, Denki and Eijiro arrive. After awhile the rest of Class 1-A pass the first qualifier test.

The qualifiers are informed of the imminent start of the second part of the exam, in which the students will have to save the largest number of fake victims in a given period of time. Mezo uses his Quirk to locate victims during the second test and carry the "injured" back to safety.

Momo is in charge of leading a group of her classmates, planning the rescue operations. Momo finds a man trapped beneath debris and rushes in to help by removing the rubble, but Momo stops her because there is an imbalance in the debris. Momo creates metal pillars and Hanta Sero tapes them together, reinforcing the wall. Ochaco begins clearing out the rubble. The grandpa finds Momo, Ochaco, Hanta, and Rikido's rescue maneuvers not to be shabby.

Due to her good work and coordination with her classmates, Momo passes the exam with 94 points, receiving her hero provisional license. All of the class 1-A get to pass the exam minus Katsuki and Shoto. Class 1-A are surprised to hear that they failed Momo Yaoyorozu offer her condolences to Shoto.

Shie Hassaikai Arc
Next day to the Provisional Hero License Exam, Shota tells Class 1-A about Hero Work-Studies, hero activities done off campus, saying that it is a more formalized version of the Field Training they did with pro heroes before. Three days later, Shota Aizawa introduces Class 1-A to the people who will teach them about Hero Internships; the third-year students who rank among the top of all U.A. students known as The Big 3: Mirio Togata, Tamaki Amajiki and Nejire Hado.

The personalities of the three students leave Class 1-A confused, who get even more confused when Mirio challenges them all to a fight. At Gym Gamma, Mirio tells Class 1-A to attack him whenever and wherever they want. Momo, along her classmates, tries to fight him but thanks to his Quirk Permeation, Mirio easily defeats all students of Class 1-A.

As Class 1-A recovers, Mirio states that the reason he wanted to fight Class 1-A is to show the experience he gained from the Hero Work-Studies. Thanks to that, Mirio was able to make his Quirk more powerful and reach the top. Class 1-A applauds Mirio's speech and they realize what the work-study could do for their skills.

Remedial Course Arc
Weeks later, Momo see the news about the police raid at the base of Shie Hassaikai, raid in which Izuku, Eijiro, Ochaco and Tsuyu participated and in which there were some casualties. When they return to their dormitories at the school, the entirety of Class 1-A checking to make sure their intern classmates are doing okay, physically and mentally, after their mission. Momo offers to make them herbal tea to make them feel better.

U.A. School Festival Arc
Shota Aizawa announces that U.A. High School will be having a School Festival and tells Class 1-A to pick out a program to perform at the festival. Tenya Ida asks ideas from Class 1-A; but they did not reach an agreement. At Heights Alliance, the entire Class 1-A decides that their school festival program will be a live performance and dance with party space.

Next day, Kyoka decides who will be the members of the musical band: Kyoka herself will be playing the bass and be the vocalist, Katsuki will play the drums and, and Denki and Fumikage will be the guitarists. Momo Yaoyorozu suggests playing the piano, having grown fond of playing it since her etiquette training in her childhood. Kyoka Jiro approves of Momo's choice, much to Mina Ashido's disappointment who wanted to dance alongside Momo. The rest of Class A-1 are divided into the Staging team and the Dance team.

Until the festival, the Band team constantly practices under the lead of Kyoka. During a break, Momo Yaoyorozu has received special tea from her mother called Phantom Black Tea "Imperial Golden Tips". As Momo prepares to let her classmates try the tea.

On the appointed day, the performance of class 1-A ends up being a huge success.

Pro Hero Arc
As November comes to a close, the Wild Wild Pussycats pay a visit to Class 1-A to celebrate Ragdoll's reinstatement.

Days later, at the U.A. dorms, Momo and her classmates watches a report of a Nomu attack and was horrified as it showed Endeavor overwhelmed by the Nomu's attack. A worried Momo looked to Shoto who walked in to watch the scene of his injured father.

After Endeavor manages to defeat High End and stands up victorious, Shoto collapses to his knees, relieved his father is still alive. Momo is one of the classmates who approaches him to console him.

Joint Training Arc
When Class 1-A and Class 1-B face off as part of a training exercising, Momo is placed in a team with Yuga Aoyama, Toru Hagakure and Fumikage Tokoyami, being the leader. They will compete against Class 1-B team formed by Kinoko Komori, Shihai Kuroiro, Manga Fukidashi and lead by Itsuka Kendo, in the second round of match-ups.

Before the round started, Itsuka confronts Momo and asks her about the beauty pageant. Momo replies she didn't know about it plus she had band practice. Itsuka claims that ever since their internship together her and Momo always get treated like a pair. Toru says that some fans during Class 1-A's performance kept yelling out "Yaoyorozu and Kendo". Itsuka doesn't like being lumped in with Momo because she feels her rival has a better Quirk and better grades. Itsuka has always wanted the chance to fight Momo head to head. Momo accepts her friend's challenge.

As the second round begins, Momo takes the initiative and leads her team. Fumikage send Dark Shadow to locate the opposing team, but Dark Shadow is possessed by Shihai, who manipulates the beast into striking its master. Shihai exits Dark Shadow and evades two nets created by Momo by merging with the shadows between the pipes.

Shihai sneakily takes Yuga away after diverting his rivals attention, but Fumikage with Black Fallen Angel soars past Shihai and rescues Yuga from him. Momo advises her teammates as to how they should deal with Shihai. She tells Yuga to use his Navel Buffet☆Laser while Fumikage flies them around. This warps the shape of the shadows and takes away all Shihai's hiding spots.

After foiling the 1-B teams' initial plan, Momo declares that even the most unexpected circumstances are within her expectations. Right as she says that however, a mushroom sprouts on her nose. Kinoko uses her Quirk to cover everything in Mushrooms, hindering the movement of Momo’s team by growing mushrooms all over their bodies.

With Kinoko's part of the plan now in action, Momo yells out to her 1-A team to keep calm and regroup but Manga quickly uses his Quirk, and a large, wall-like string of Katakana suddenly appears, cutting Momo off from the rest of her team. Itsuka planned on isolating Momo to cut the brain off of her team. With Momo separated from her team, Itsuka attacks her with an enlarged palm thrust. Momo tries to block it with a dense shield but she's knocked back by Itsuka's Big Fists Itsuka barrages Momo enlarged fists of fury.

Momo believes that she isn't superior to Itsuka, but refuses to submit and resolves to earn the respect she's been given. Remembering Itsuka’s compliments and lamentations, Momo finds new resolve to win the fight. Momo creates a cannon mid-fight, much to Itsuka's surprise, and fires the cannon over the wall. However, Itsuka lands a powerful hit with her Double Jumbo Fist. After this, Momo creates a rope.

Dark Shadow grabs Toru and flies up to the bag that Momo fired, which has “Yaoyorozu's Lucky Bag” written on it. Inside he finds ethanol to get rid of the mushrooms and infrared goggles. With ethanol, Fumikage and Toru manage to prevent them from growing mushrooms through the body. And with the help of infrared goggles from Momo’s bag, Fumikage locates the Class 1-B students but was defeated due to a fungus that Kinoko caused to grow mushrooms in his windpipe.

Meanwhile, Toru locates Manga and attacks him. She is about to defeat him, but in that moment, Itsuka appears and captures her in her giant grip. Momo roped Itsuka to herself while she was still attached to the cannon. Itsuka knocked her unconscious, but now she can barely move because of the great weight she carries. Class 1-B comes out victorious with a 4-0 in the end of the second round of match-ups, but Itsuka doesn't feel victorious since Momo was always one step ahead.

Before the third round started, Itsuka accompanies Momo to the infirmary while looking on concerned. After a quick recovery, Momo joins her classmates to watch the rest of the Joint Training Battle. Afterwards, it’s revealed that Class 1-A won the entire exercise and a relieved Momo celebrates their outstanding victory over Class 1-B. Later, classes 1-A and 1-B hang out together after the exercise, showing that there are no hard feelings and happily socializing in the common area. Momo spends time talking to Itsuka.

My Hero Academia: Heroes: Rising
During fall, the Hero Public Safety Commission devises the Hero Work Recommendation Project, to help to train the new generation of Heroes due to All Might's retirement. Weeks go by, and shortly after winter begins, after the Hero Interview Training, Class 1-A is sent to Nabu Island, a remote place in southern Japan. The Pro Heroes who protected the island are about to retire, so the students will take care of the place, performing duties as real heroes acting like their own "Hero Office", until the arrival of new Pro Heroes.

Because Nabu Island is quite isolated from the rest of the country, and therefore far from any villain activity, there has been no notable incident since the last thirty years. For this reason, their work on the island basically involve mostly minor deeds. For example, Momo goes to help repair a motorcycle of one of the inhabitants. At night, after working all day, all Class 1-A students mention that despite they only did minor deeds, this kind of hero work is still hard, even though they're not fighting anyone. The grateful island citizens bring a bunch of food for the kids as a token of appreciation for their help. She and Tenya thank the neighbors for their meals.

The next day, while Momo and several class 1-A students wait in the office waiting for requests, a neighbor and Fumikage arrive to report that the island is being attacked by a group of villains. Tenya quickly organize the class to face this crisis: She, Mina and Kyoka assist their classmate and Nabu inhabitants with medical evacuation. After Eijiro, Katsuki and Denki saved Yuga, Minoru and Toru from the villain Mummy, the girls bring them to safety as well as direct the citizens to the safe hold. When Mummy is defeated, Momo and Kyoka arrive to inform their classmates that they have already evacuated all the citizens of the area. Katsuki tells them to continue the evacuations as he heads off to find more villains.

However, Class 1-A fails to defeat the remaining villains, and they are forced to retreat. At night, the Class A members regroup at a factory where the rest of the island citizens are currently staying at due to the villain attack. Momo uses her Quirk to the limit to create a large amount of supplies for the refugees, being aided by Denki. Kyoka shows concern for both of them, as they are overusing their Quirks, but Momo insists to keep on going.

Later, all the students have a meeting where they discover that the objective of the villain leader, Nine, is to steal the Cell Activation Quirk from a boy named Katsuma. With this information, they devise a plan to approach them in front and keep civilians safe. The plan is to lure the villains to the furthest corner of the island where ancient castle ruins are. The heroes will engage the villains using the terrain to their advantage and spit the villains apart, so each member has to face several students alone.

The next morning, Nine and his crew arrive at the entrance to the island. Momo Yaoyorozu and Yuga Aoyama are the first line of defense. Momo is very tired after using her Creation Quirk the night before by providing utilities for the evacuated islanders, but she is still willing to take on the villains. Next to her is a weapon she has created using her last fat reserves, and she keeps hidden under a large cloak with camouflage patterns.

Seeing the villains approaching, Momo orders Yuga to attack them with his Navel Laser Quirk. Yuga uses his super move "Can't Stop Twinkling: Supernova" to fire a massive naval laser bombardment at the villains. The villains avoid the blast, but Momo then removes the cloak, revealing two large cannons and begins firing at the villains. Nine blocks their attacks with his Air Wall Quirk, but Slice and Chimera are forced to break away, unaware that they are falling right into Class 1-A's trap. Momo and Yuga are completely exhausted, but the first phase is accomplished.

With Nine's allies driven to designated points, now only the leader remains. Class 1-A begins to attack Nine in turns to force him to use his Quirk as much as possible until he reaches the limit of his abilities. With Momo's help, Yuga continues to contribute to the fight, despite he has already reached the limit with his Quirk, until Nine finally defeats them.

While she is unconscious, Izuku and Katsuki manage to defeat Nine, saving the island and its inhabitants in the process. After Class 1-A emerged victorious over the threat, the military and a large number of heroes arrive on Nabu Island, rescuing the civilians and medically treating Class 1-A. The villains are arrested, and Class 1-A continues to stay on Nabu Island to help repair the damage done by Nine and his villains until the Public Safety Commission suspends the program and orders them to be sent home.

With the island being repaired by the military and the heroes, Class 1-A boards a ferry to return to the U.A. High School.

Endeavor Agency Arc
Momo Yaoyorozu expresses pity for Katsuki when the interview staff had cut him out from the interview. Later, Class 1-A participates in a Hero Interview Training taught by Mt. Lady. During the mock interview, Momo talks about what she is capable of with her Quirk, and the heroine congratulates her for her performance.

Days later, the Hero Work Recommendation Project takes place, staying on Nabu Island before returning.

Shortly after they return, on the night of Christmas Eve, Class 1-A celebrate Christmas at Heights Alliance, and the whole class participates in a random gift exchange in the dorms.

With the start of the second Hero-Work Study, Momo and Setsuna intern under the Pro Hero Majestic during U.A. High School's winter break.

My Hero Academia: World Heroes' Mission
During the Work Studies, an anti-Quirk cult known as Humarise set off a Trigger Bomb in a major city, killing millions and destroying the entire infrastructure. The World Heroes Association gathers a large force made up of heroes from around the world to assault the branches that Humarise has in 25 cities around the world. Momo and Setsuna accompany Majestic to Singapore to help the heroes gathered here for the mission, including Big Red Dot, Singapore's main hero.

The Singapore Task Team successfully raids Humarise's branch in the city, but while dozens of cultists are arrested, no Trigger Bomb is found. The situation in the same in the remaining branches attacked, so all the teams are ordered to be on standby in the assigned cities

While stationed in Singapore, Flect Turn, the leader of Humarise, publicly broadcasts to the entire world that they have planted the Trigger bombs in the twenty-five cities, and that they will explode in less than two hours. Momo expresses her distrust in Flect Turn when he, pretending to be fair, says the cities in which the bombs are located, being one of them Singapore.

Panic spreads through the threatened cities, and the Heroes have to deal with both helping the citizens and finding the bombs before they go off. Momo uses her Quirk to create special sensors for Setsuna to spread them out in order to locate the bombs before Majestic gives her a ride to another sector. Once the team finds the bombs, the heroes engages in an all-out war against the Humarise agents. In the end, they manages to get hold of the Trigger Bomb, however there is little time left for it to explode, so Big Red Dot uses his Tidal Bore Quirk to hoist the bomb over the city, with Momo protecting him from the Humarise warriors with all her might.

Fortunately, none of the Trigger Bombs ever go off thanks to Izuku, Katsuki, Shoto, and Rody were able to assault the main Humarise headquarters and defuse the bombs worldwide, saving the world from catastrophic destruction. After this, the heroes defeat and imprison the last remnants of Humarise. Big Red Dot personally thanks Momo for her help.

Once the crisis has been averted, Momo leaves the country with her team and returns to U.A. High School; reuniting with the other classmates who also participated in the operation as well as those who remained in the school.

Paranormal Liberation War Arc
Winter break ends and students return from their Work-Studies to show their progress with their Quirks and skills. At Ground Alpha, the students show off their development by fighting Villain Bots under the supervision of All Might. Momo shows how she has improved prediction and efficiency in using her Quirk during the mock battle.

Later, the classmates enjoy a hot pot party. Since it's a dish with a hodgepodge of ingredients, Momo wants to add tea leaves, but Ochaco convinces her otherwise.

The months go by until it's late March. Thanks to the police investigation and its spy Hawks, the Hero Public Safety Commission has found out the plans of the Paranormal Liberation Front and its allies. With this information, the Commission organized a large force of Pro Heroes, divided in several teams to take down the villain organization.

While a team of heroes raids the Jaku General Hospital, where the Nomu are created, another team does the same at Gunga Mountain Villa, the Front's main headquarters. Momo is a member of the Villa Backup Team along with some of her classmates and Class 1-B students. Their mission is to provide support to the heroes who raid the Gunga Mountain Villa and prevent villains from escaping.

When the operation begins, Momo is comforting Kyoka, as she is worried about Denki, who participates in the raid on the Gunga Mountain Villa. Momo tries to cheer her friend up by telling her that Denki will be fine.

After the raid commenced, heroes gained the upper hand, taking down many of the Front's members. However, the Jaku team allowed Tomura to awaken and he ordered Gigantomachia to come to him. This results in the giant defeating many heroes as he simply walked towards Jaku City. Midnight, along with Kamui Woods, tried to put him to sleep, as sheer force did nothing to him. They were however stopped by Dabi and Mr. Compress, who were riding on the giant's back, along with the other lieutenants.

As Midnight's lying on the ground in a bad shape, she contacts Momo through their comms, and after confirming she knows the situation, she tells her that she needs to put Gigantomachia asleep with an anesthetic, even if it is against the law. Before Momo can ask what is going on, Midnight is ambushed by several Liberation soldiers, but not before telling Momo that if it is too difficult, they can hand the anesthetic to the Heroes and evacuate.

Momo loses contact with Midnight as the others around her wonder what she was talking about. Momo tries to think of a plan before finally coming up with one. She orders Kyoka and Mezo to use their hearing to determine the time it will take him to arrive at their location and the path he will use. She also adds that Mezo can use his eyes since he is so massive. She asks Juzo to lend a hand as Kyoka reports that she can see him.

They then notice Mt. Lady and Kamui Woods both holding on to Gigantomachia's leg, but they believe it will slow him down just a little bit. Momo creates anesthetics that she hands to her friends while saying that she never learned to be a Hero that shows their back to an enemy. She says she will fight and Denki agrees to back her up, because when they don their costumes and step outside, they become Heroes, regardless of whether or not they are students.

The plan is to try to get Gigantomachia to swallow at least a 30-liter vial filled with sedative, because due to gargantuan's sheer size, injecting the sedative via syringe would be almost impossible. Following Momo's lead, the students set the trap for Gigantomachia. Juzo uses his Quirk to soften up the ground and Momo creates explosives with her Quirk and plant them in the softened areas. They also position several chords covered in Minoru's orbs.

As they planned, Gigantomachia steps into the students' trap and he falls to the ground. The strings covered in Minoru's orbs stick to his chin, and while the giant tries to get out, several students pull the strings to force him open his mouth, while the others charge at him to give him the sedative.

The lieutenants of the PLF who are on Gigantomachia’s back defend the monster and themselves from the students’ assault, with Dabi creating a fire barrier to prevent the students from getting close. The giant himself blows away several students with his powerful breath, but when he tries to get out of the softened earth, the bombs that Momo planted explode, causing him to sink even deeper. Several heroes come to help the students, with Mt. Lady pushing Gigantomachia down on the ground to open up his mouth for the sedative to be administered.

Although Gigantomachia shakes off the heroes, Eijiro manages to throw a vial into his mouth. When he is about to crush him, Gigantomachia is attacked by the students who use various cannons created by Momo, who in turn is dedicated to driving her classmates away from the flames with the help of fireproof suits of her creation. Momo says that now that Gigantomachia has ingested the sedative, they need to make him move around so it will spread faster. She calls out to Majestic and he flies in with several other Pro Heroes to take him on.

However, annoyed by the constant interruptions, Gigantomachia transforms, taking on an armored appearance, and with his enormous strength he finally manages to get out of the trap and easily defeat the heroes, to continue on his way to Tomura, destroying everything in his path. The students of U.A. watch with complete horror at the destruction left by the monster, with Momo pointing out that the the only reason none of them are dead since they weren't considered worthy enemies. It is also revealed that Majestic used his Quirk to help the students get to safety, but not before telling all of them that they all made the right decisions and should never doubt it. Some of them wonder if the sedative will really have an effect on the Giant.

Shortly after, Momo coordinates her teammates to rescue, aid, and assist the wounded heroes, where they run into Mirio and inform him about the sedative they gave to Gigantomachia, which finally manages to take effect. After the battle, Momo and her classmates find Midnight's lifeless body in the forest, and all of them tearfully mourn over the death of their teacher. Two days later, Momo and her classmates visit Shoto in his hospital room. She tells him about everything while comforting a grieving Mina after Midnight's death and holding back her own tears. After checking in with the conditions of her classmates, she returns to Heights Alliance where she and the rest of the class receive a letter from Izuku explaining his origins as being Quirkless and the powers of One For All which is the reason why he left U.A. High to guarantee their safety from All For One.

Tartarus Escapees Arc
A few days after Izuku left U.A., Momo joins a meeting with Class 1-A. She and the class deduce that Izuku is now working with Endeavor and his team. With all of them forced on standby and wanting to know the truth, they use Endeavor's U.A. status to confront him and get him to reveal what they believed.

Once Principal Nezu gives Class 1-A permission to bring back Izuku to U.A., Momo joins with Class 1-A to search for Izuku while at the same time, apprehending any prison escapees along the way. After a month of trailing in Izuku's whereabouts, Class 1-A finally arrived on the scene to defeat the villain Dictator, with Momo creating a harness to subdue the villain, while Katsuki yells at her to call him by his full hero name. When Izuku refuses to yield, he demands everyone to get out of his way, which means they will have to fight.

While Izuku is distracted with several former classmates, Momo creates a machine designed to put Izuku to sleep once he gets caught. Fumikage follows through the plan and then crashes Izuku to the machine where Momo activates it. He is restricted by the machine, where Momo comments that they've been authorized to use their Quirks to help the heroes, and this mission to ensure Izuku's safety. Noticing that the machine is designed to put him to sleep, Izuku destroys it with his head and tries to free himself, escaping again.

Momo joins alongside the rest of her class for their ultimate procedure to capture Izuku, creating rails on Shoto's ice ramp, which the rest of the class use to push Tenya into the air far enough to finally reach Izuku. She joins back with the rest of the class in hearing Katsuki apologizing to Izuku before he collapses from the shock and exhaustion. She notes to Ochaco that it's about to get harder once Izuku returns to U.A. She escorts him back to a heavily fortified U.A. High where they are confronted by angry protesting civilians. They are aware that Tomura is after Izuku and fear him being there will put them in danger, until Ochaco gives a pleading speech to let him rest, which convinces them to let him stay.

Izuku is escorted inside, thoroughly washed down by the boys, before finally passing out from exhaustion. Thinking about the state of the civilians currently, Kyoka drags her former bandmates close to her, including Momo, stating that just like the last time there were other people that regarded them with apprehension, they need to do something to reassure them and bring smiles to their faces, just like they did at the Culture Festival. Class 1-A comes back together, as they declare they won’t just bring the world back to how it was, but to make it a better place than before, and do it all together.

U.A. Traitor Arc
Two days later, Class 1-A learn that during this time, Tomura had fought American No. 1 Hero, Star and Stripe, and while she was killed during the battle with Tomura successfully stealing her Quirk, New Order, thanks to her actions, the Quirk acted like a virus within his body, destroying several of his Quirks and delaying his procedure by about a week. All Might informs all this to the class, telling them that this is now their perfect time to prepare for the inevitable all-out war. The class reveals over the past month they had been training with the Wild, Wild Pussycats in order to keep up with Izuku in the incoming conflict, and are now about to head out to continue their training.

The class train amongst themselves in the courtyard, where during a lull, Denki asks that with Tomura and All For One weakened and Gigantomachia sedated, the fight should be easier now, but Katsuki and Momo tell them the three reasons why they're wrong. Katsuki says the first is that All For One is a master of "hide-and-seek", making it nearly impossible for them to track him down. Momo adds the second being that not only will Tomura be more complete in this battle, but also that they're only working with half of the available Heroes. Katsuki concludes the last point being the villains will be the one with the advantage to start the battle, so they'll need to call up everybody possible to prepare and help.

Shortly after this, Momo and her class received the news that Izuku has captured the Aoyamas and revealing Yuga to be the traitor who isolated the class at the U.S.J. and revealed the location of their training camp. She and the class refuse to back down at Nezu's request to leave, listening to Yuga's painful confessions, and Izuku's declaration that Yuga could still help them.

The rest of the class soon realize that since they could only communicate with him when he contacted them, Denki figures out Izuku's point about "steering the villains" to enter the fight with Momo adding that Yuga may be the only one able to deceive All For One.

Present Mic asks Class 1-A why, with them being the greatest victims after all this, they're so willing to trust him, and Tenya simply responds that what happened is in the past, and with them being unable to realize how he's been feeling all this time, they carry some responsibility, so they must reach out to him as friends in order for them to become equals again.

Shota appears on a tablet screen, taking full responsibility and reveals that he has an idea. She listened to Shota's plan after the Aoyama Family's ears have been covered. Naomasa then has the Aoyama Family escorted back to their HQ, telling everyone not to say a word to anyone else about the plan while he and the rest of the class looking on sullenly.

Back at Heights Alliance, Momo and her class take a breather, before getting ready to gear back up, as she and everyone, with fire and rage in their eyes over the betrayal, prepares to bring All For One down once and for all. She joins up to form their "Search Squad" as they head out to hunt the villains.

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