Final War Arc

The Final War Arc is the twenty-second story arc in My Hero Academia, and the fourth story arc in the Final Act Saga.

The time has come for the final battle between the Heroes and Villains to decide the fate of the world. All For One thinks he has the upper hand in finally cornering Izuku Midoriya and One For All, but thanks to Yuga Aoyama and the power of the Warp Gate Quirk, the Heroes turn the tables, splitting the Villains up to divide and conquer.

Story Impact

 * All Might, Naomasa Tsukauchi, and Nezu inform Class 1-A of their plans for the second War.
 * Using Hitoshi Shinso's Brainwashing Quirk, which he has trained to allow him to get people to speak, he can brainwash the Aoyama Family so they can communicate with All For One without him detecting any lies in their voices, and allow them to lure him to a specific location.
 * Meanwhile, Shota Aizawa enlists Neito Monoma to Copy Kurogiri's Warp Gate Quirk, so that the Heroes can be warped onto the battlefield for a surprise.
 * It is revealed during the first era of Quirks, All For One stole a "Lie Detector" Quirk from one of Naomasa Tsukauchi's ancestors.
 * He commands the Aoyamas to deliver Izuku to him, using the Quirk to determine they aren't lying.
 * After meeting in an abandoned parking lot, Yuga seemingly betrays Izuku to All For One, only to reveal it was all an act they put on to lure him out of hiding.
 * He also reveals during the charade All For One's ultimate goal to instill chaos throughout the world so that Quirks are the only thing of value, so that he may rise up with his arsenal of Quirks and take control of everything.
 * All For One warps all the Villains to fight, while the Heroes, thanks to Neito, utilize the Warp Gate Quirk to warp themselves to the battlefield.
 * As the final battle between the Heroes and Villains begins, All Might activates the "Troy" defense system, surrounding all the villains into separate cages, delaying them enough for the Heroes to throw them into separate Warp Gates, splitting them all up.
 * Fat Gum is in command of the primary battlefield, to watch over Yuga and deal with the villains who weren't warped.
 * All For One is warped to the ruins of the Gunga Mountain Villa, to face against a group of Heroes led by Endeavor and Hawks.
 * The team also consists of Kamui Woods, Shishido, Pixie-Bob, Tiger, Tsukuyomi, and Earphone Jack.
 * Dabi is warped to Kamino to face off against Shoto.
 * The team also consists of Burnin, Kido, Onima, and Ingenium.
 * Tomura Shigaraki is warped to a now floating U.A. High, with the intention to face against Deku and Dynamight, until Deku is forcefully dragged through another Gate first.
 * The team also consists of Best Jeanist, Edgeshot, Mirko, Nejire Chan and Suneater.
 * Himiko Toga is warped to an aquarium on Okuto Island to face off against Uravity, Froppy, and Deku, who she has forced to join them.
 * The team also consists of Gang Orca, his Sidekicks, and Sirius.
 * It is revealed the floating U.A. Fortress is designed to break off into individual segments in order to counter Tomura's Decay, as well as being surrounded by an electromagnetic barrier to prevent him from escaping.
 * The fortress is maintained by Power Loader, Cementoss, Mei Hatsume, and the Development Course to rebuild the broken pieces, with Mei being the one who designed the original structure.
 * Additional resources are provided by Creati, while the power to sustain the energy and barrier is provided by Chargebolt, Comicman, and the other electricity-based U.A. students.
 * Furthermore, Phantom Thief, assisted by Eraser Head and Manual, Copies Erasure to once again erase Tomura's Quirks.
 * "Tomura" suddenly begins to sprout a monstrous glob of never-ending fingers from his left hand, revealed to be a result of the Quirk Singularity, with his body adapting to the immense amount of power he possesses.
 * Deku is unable to be warped to their location, due to Phantom Thief only being able to use one Quirk at a time, and the danger of undoing Erasure on "Tomura", forcing the Heroes to fight him in the meantime.
 * On Okuto Island, Himiko attacks Deku, bypassing his Danger Sense due to not having any malicious intent, asking him to be her boyfriend.
 * Deku's response causes Himiko to feel rejected, and goes to attack him and Uravity, stabbing the latter in the back.
 * Uravity and Froppy tell Deku they will handle her, while he blasts away to get back to Tomura.
 * Deku uses a combination of Float, Fa Jin, and Air Force to blast his way across the ocean toward the battlefield.
 * The Second User of One For All cautions him not to overdo himself, as well as revealing that his Meta Ability has evolved beyond the point it used to be, and so must only be used as a last resort.
 * In Kamino Ward, Dabi creates a fire tornado that burns everything down, and is confronted by Shoto and the Flaming Sidekickers.
 * It is revealed that Toya survived his "death" after being rescued by All For One and Doctor Kyudai Garaki, intending to raise him as one of their "spare vessels".
 * He was comatose after his accident and awakens after three years, where he learns the experimentation process failed, with Toya still unable to handle his fire with his new body.
 * Toya escapes the nursery, with All For One and the Doctor letting him free, being unable to manipulate through his obsession with Endeavor, and believing he will only last a month till he dies.
 * Toya secretly returns home to find Endeavor continuing his abuse to Shoto, and once again reminded of his status as a failure, left his Toya identity behind and was reborn as "Dabi".
 * After being reunited with the Doctor years later, he realizes Dabi managed to survive all this time purely on his grudge toward his father.
 * Having studied his father's moves to get stronger, and breaking off his limits with his new body that can't feel pain, the increasingly combusting Dabi utilizes the Flashfire Fist technique to unleash Hell Spider and Jet Burn attacks on Shoto and the Heroes.
 * Dabi comments on his disappointment towards Shoto, due to having been given everything and never being able to take advantage of it, always relying on others.
 * Before the War, Endeavor tried to convince Shoto to change teams, but Shoto remained adamant about needing to be the one to face Dabi, just like Endeavor needing to face All For One and Izuku needing to face Tomura.
 * Shoto unveils his own Flashfire Fist technique, Phosphor, a move completely of his own making, combining his fire and ice into one, which he declares he'll use to take Dabi down.
 * Shoto reveals his Phosphor technique involves circulating the heated and chilled blood within his body to create what is akin to cold fire on his chest.
 * After being attacked by Shoto's new Ultimate Move, "Coldflame's Pale Blade", and realizing that Shoto can withstand his heat and neutralize his fire, Dabi unleashes the full might of his fire through volcanic eruptions all over the battlefield.
 * Thinking about how his classmates have always been there for him and never left him behind, Shoto unleashes his ultimate move, "Great Glacial Aegir", freezing the entirety of the city and seemingly neutralizing Dabi for good.
 * With Dabi's defeat, the Kamino Team deals with the remaining Near High-End Nomu after having secured all the accompanying Villains.
 * All Might announces to all the battlefields of Shoto’s success against Dabi, boosting everyone's morale.
 * A team at the Jaku Hospital Ruins, led by Mt. Lady, is revealed to be in charge of protecting Gigantomachia’s containment facility from the Paranormal Liberation Front.
 * Pinky and Red Riot face against Midnight's killer while there.
 * A group of Heroes, including several U.A. students, are fighting at the Takoba National Stadium.
 * A Tartarus escapee named Kunieda is left behind in the Troy parking lot, targeting Can't Stop Twinkling.
 * Spinner, who has received a Gigantification Quirk from All For One, leads an army of heteromorphs to storm Central Hospital to retrieve Kurogiri, while a team led by Present Mic defends it.
 * At the Gunga Mountain Ruins, All For One faces off against Endeavor and Hawks, who fight him alone in order to keep him away from the other fighters while trying to remove his new life support helmet.
 * It is revealed not all of Hawks' feathers were able to be recovered, so he wears prosthetic ones to reclaim some of his speed.
 * One of All For One's Quirks is revealed to be "Hardflame Fan".
 * It is also revealed he does not possess the same "Hyper Regeneration" Quirk as Tomura.
 * All For One taunts Endeavor, revealing his role in Toya's disappearance, allowing him to catch him off guard and slice his chest with a Quirk combination attack.
 * Tsukuyomi and Earphone Jack manage to save Hawks from All For One's attack, ready to help him fight and buy time till Endeavor recovers.
 * Earphone Jack loses her left ear and subsequent earphone jack from an attack by All For One.
 * She continues to fight back and resist despite his taunting and mockery.
 * The vestiges of the Quirks All For One has stolen in the past start to resist against him, due to him possessing a copy of All For One, making him weaker and more vulnerable.
 * Hawks synchronizes with Earphone Jack's Legato and attacks All For One with the Soundwave Vibration-Enhanced Flight Feather Blade, shattering a piece of his mask, which is further destroyed by Tsukuyomi's Ragnarök: Fleeting Blow.
 * All For One regains control of his Quirks by absorbing several of them into himself, and unleashing a hell of Rivet Stabs to attack his opponents and reclaim the pieces of his mask.
 * Endeavor returns to the fight to protect the three Heroes from most of the damage, but losing an arm in the process.
 * It is revealed what inspired Endeavor to be a hero was after seeing his father get killed while trying to save a girl from a villain.
 * Endeavor conflicts with his younger self about his actions and desires, declaring to makeup for his mistakes, he will put an end to All For One so the youth will have a better future.
 * Endeavor forms a Vanishing Fist from his amputated arm, blasting All For One and continuing his assault to wear him down, eventually using Prominence Burn to seemingly kill him for good.
 * However, All For One not only survives, but suddenly begins to regrow his eyes and ears, appearing to be related to the Quirk-Restoring Drug.
 * Yoichi Shigaraki senses a disturbance as several unknown figures speed toward Deku.
 * The fight against Tomura at the U.A. Flying Fortress continues, as the Heroes try to avoid the fingers and reach the main body.
 * Dynamight is revealed to possess a new support course item called the "Strafe Panzer", allowing him to wield cannon-like pauldrons from his shoulders to shoot his explosions out.
 * It is revealed that Eraser Head can still use Erasure with just one eye.
 * It is revealed the Business Course is within the U.A. Fortress, documenting everything going on.
 * Dynamight unleashes the full power of his Cluster attack, only to be stopped by Tomura, crushing his right arm.
 * Tomura decimates the other Heroes before telling Dynamight he's only interested in him due to his closeness with Izuku.
 * Eraser Head and Mandalay try to get into contact with Izuku again but are unable to due to interference.
 * Lemillion arrives on the battlefield, revealing that he was also within the U.A. Flying Fortress.
 * He, Suneater, and Nejire Chan prepare to fight Tomura together.

Characters Introduced

 * Kunieda

Quirks Introduced

 * Unnamed Lie Detector Quirk: An unnamed Quirk used by All For One that detects malicious intent. This Quirk was stolen from Naomasa Tsukauchi's ancestor.
 * Unnamed Electric Arrow Quirk: Yuyu Haya's Quirk lets her discharge electricity from her hands in the shape of an arrow.
 * Hardflame Fan: One of All For One's Quirks that allows him to create a wall of fire which can be used for defense.

Battles & Events

 * Deku, Uravity & Froppy vs. Himiko Toga
 * Shoto & Flaming Sidekickers vs. Dabi
 * Endeavor, Hawks & Trainees vs. All For One
 * Pro Heroes & Trainees vs. Tomura Shigaraki