Rikido Sato/Synopsis

Battle Trial Arc
He is paired up with Koji by the lottery. It is unknown how well they both did in the trial itself.

U.S.J. Arc
Rikido shouts to Tenya about running for help. Upon seeing All Might, he smiles happily. After the battle when the League of Villains leaves Unforeseen Simulation Joint, he is seen with the rest of his class.

U.A. Sports Festival Arc
Rikido places 15th in the Obstacle Race, allowing him to participate in the next event, the Human Cavalry Battle. He then teams up with Toru, Kyoka, and Koji. Rikido fails to advance to the tournament event of the Sports Festival due to his team not accumulating enough points.

Rikido watches the closing ceremony of U.A.'s Sports Festival along with his class.

Vs. Hero Killer Arc
Two days after the Sports Festival, Rikido is in class. During the Hero Informatics period, Class 1-A has to decide on Hero names. Rikido writes down and shows his classmates his Hero name: Sweet Taste Hero Sugar Man (甘味ヒーロー・シュガーマン).

After Class 1-A is finished formulating their Hero names, Rikido is given a list of 40 work places in order to choose a workplace that he wants to train at. On the day of the work place training, Rikido is at the train station with his class so that he can travel to the work place of his choice by train.

Final Exams Arc
One week before the end of term test, Rikido talks to Koji about the end of term test, saying that it will be more difficult than the mid-term tests. On the day of the exercise test, Mr. Principal reveals that Class 1-A will be fighting U.A.'s teachers in their exercise test.

Rikido is paired with Eijiro and they must face Cementoss in their test exercise. Rikido, Eijiro, and Cementoss arrive in an uninhabited city where their test exercise will take place. Cementoss explains the 30-minute test; Rikido and Eijiro must either handcuff him or one of them must escape the battlefield within 30 minutes in order to win and pass the test. The test begins.

Eijiro and Rikido keep smashing their way through Cementoss' cement walls, but the more walls they destroy, the more walls Cementoss creates to keep them at bay. Cementoss tells Eijiro and Rikido that their weaknesses are drawn out battles and advises the duo to push their strength to the limit. Eijiro and Rikido are unable to get past Cementoss' walls by the time the End of Term Test finishes, and as a result, they fail.

Back in class at U.A., Rikido is crestfallen that he is unable to go to the forest lodge due to failing the practical test. Soon, Shota enters the classroom and informs Class 1-A that they are all going to the forest lodge which will be a boot camp, which makes Rikido happy. However, Rikido will be receiving harsher training at the boot camp for failing the practical test. Rikido goes with his class to Kiyashi Ward Shopping Mall to buy necessities for the forest lodge.

My Hero Academia: Two Heroes
At some point Rikido arrives to I-Island along with Hanta.

On the night of the I-Island preview, Hanta and Rikido go eat at Meke’s Dinner when the I-Island system is hijacked. A curfew announcement is made, so they walk back to their hotel room. Once Melissa reboots the system to normal mode, Rikido is glad everything is alright.

Rikido hangs out with the rest of his class after the I-Island Expo opens up.

Forest Training Camp Arc
Due to a shopping center incident, where Izuku had an encounter with Shigaraki, Shota informs Class 1-A that the destination for their lodge trip has been changed and the new destination will only be announced on the day of the event. The first semester has come to a close and summer break has begun.

Following the end of the semester, Mezo, along the rest of Class 1-A boys, is invited by Deku to participate in an endurance training session, an idea of Minoru and Denki (an excuse to be able to see the girls in bikini). When Katsuki arrives and challenges Izuku, the boys opt to compete against each other by sprinting down the pool. Shota arrives to kicking all the students out of the pool area due to the expiration of their time limit.

On the day of the summer camp, they are informed that the new destination will be a mountainous region, owned by the professional Hero Team, the Wild, Wild Pussycats, where they will undergo reinforcement training to strengthen and upgrade their Quirks. Class 1-A’s bus stops for a restroom break, where they meet Pixie-Bob and Mandalay, who challenge the students to reach base camp past the forest in three hours. Then, all Class 1-A is forcibly thrown into Beast's Forest by Pixie-Bob's Quirk.

To reach their destination, they must traverse the forest, while monsters made from dirt clods created by Pixie-Bob attack them students. Class 1-A works together to fight their way through Beast's Forest. They encounter several different dirt monsters. Rikido and Eijiro and use their enhanced strength to destroy one of the monsters after Hanta slams it into the ground with his tape. Class 1-A doesn't make it through the forest for several more hours. Well over their time limit, Class 1-A arrives at the base camp exhausted and battered. Then, they fetch their luggage from the bus and put it in their rooms, and later go to the dining hall and the Pussycats serve dinner.

The next morning, Class 1-A are outside the training camp cabin. Shota greets his students and tells them that they will undergo reinforcement training to strengthen and upgrade their Quirks. Rikido training consists of working out while eating the sweets he needs to activate his quirk to power up.

After dinner, Hanta and the other students who failed their practicals exams take extra lessons with Shota until two in the morning. Training starts back up at seven the next day. Rikido and the others are all sleepy and tired because the extra lessons, but Shota Aizawa force them to train while instructing them. Shota gives advice on increasing the power of their Quirks: Rikido must increase the capacities of his Quirk, telling him to continuously use his Quirks.

At the third day of training, Rikido is happy because that night all the students will participate in a courage test. Shota, however, forces the remedials to sit out for more teaching, much to their displeasure. The Vanguard Action Squad of the League of Villains invade that night. Mandalay sends out a telepathic message warning the students of their arrival. Shortly after Shota leaves, Mandalay sends out two more messages giving permission for students to fight back and informing everyone that Katsuki is one of the villain's targets.

The villains successfully kidnap Katsuki and the students return home from camp. Two days later, Rikido visits Izuku in the hospital along with many of his peers, where he hears Eijiro and Shoto’s plan to rescue Katsuki, asking Izuku to join them. Although he does not oppose the intentions of his classmates, Rikido does nothing to stop them.

U.A. School Festival Arc
At U.A. High School, Class 1-A along with Rikido choose to make a band and dance performance for the U.A School Festival.