Chapter 1 (Team-Up Missions)

Start and Renew is the first chapter for My Hero Academia: Team Up Mission, written and illustrated by Yoco Akiyama.

Summary
Izuku, Ochaco, Katsuki arrive at a Hotel to begin their first Team Up Mission.

In a flashback, All Might announces due to them all having their Provisional Hero License they can now participate in a new program. All Mights tell Class 1-A about Team Up Missions on how it's suppose to increase teamwork and communication within the Heroes. Everyone is handed a Mission envelope where Izuku finds his first team up with Ochaco and Katsuki.

While they're waiting at inside Hotel, a voice calls for them. When they all turn around to find out who it is, Izuku quickly recognizes her as Rabbit Hero: Mirko. Izuku tells them Mirko is unique hero that she doesn't stick to one location and has no proper Hero Office nor sidekicks, which she responds with a "Thank You". Izuku is excited to start his Mission when Mirko tells them she doesn't really care due to working alone and only agreed because of the Hero Public Safety Commission. Mirko tells them they're free to follow and they agree to the circumstance.

Soon after, a villain is causing havoc when Mirko comes in with a kick knocking them out. As Izuku and Ochaco praise Mirko, a little boy's Gang Orca balloon floats away. Ochaco uses Zero Gravity on herself and returns it back to him. The boy thanks Ochaco followed by her calling him an angel. Izuku is happy for Ochaco and wants to his best when Katuski begins shouting.

Katsuki is asking where are the villains are at which causes the locals to flee away. Izuku telling Katsuki he is scaring people when Katsuki ask him if they have a problem and Izuku quickly responds with a no. A hooded figure passes by them noticing his costume asking if he is a hero. Izuku explains he is still a student but doing hero work due to school. The hooded figure comments that it must be nice being able to use his Quirk freely. Izuku ask the hooded figure why they're so pale but the hooded figure says not to approach them any further and walks away. Izuku wonders if the hooded was sick.

Later, Mirko tells her "Team" she didn't plan to teach them anything but tells Katsuki hes attitude to kill Villains is great. Ochaco is praised for helping the boy, while Izuku is told he did nothing.

Elsewhere, the hooded figure begins to feel unwell and needs to use his Quirk and begins leaking out a poisonous gas. The gas causes a nearby man to fall, while it continues to spread. Civilians start rushing into the Hotel where Mirko "Team" is currently at and is told what's occurring. The news comes on reconfirming the situation and that the poisonous gas is spreading across the Sarumai District and to seek shelter. The news confirms the source is Takeshi Bushijima using his Poison Gas Quirk. Izuku comments on how dangerous it is and ask what Mirko will do. Mirko tells them she is going go kick their butt and heads out.

Mirko and her "Team" now equipped with mask begin to evacuate the area. With the gas dissolving, Ochaco floats high up to scope where the gas source is currently coming from. Ochacho finds Takeshi on the edge of town, where he is trying to stay away from everyone. Katsuki and Izuku go towards his direction, but Izuku is confused on Takeshi's intentions. They almost catch up to him, while Takeshi continues avoiding the civilians. Mirko's "Team" finally surrounds him but Izuku wonders something must be up. Before Katsuki can land a hit on Takeshi, Izuku stops Katsuki. Katsuki questions Izuku due to Takeshi being a villain, but Izuku explains that he has been purposely avoiding everyone due to not being able to handle his Quirk. Takeshi tells them it's true and his Quirk accumulates over time and he can't use it freely due to the laws which forces him to store it. Takeshi ask the heroes, he is unsure if this makes him a villain. Izuku wants to help him as Katsuki understands the situation. Katsuki figures Takeshi would feel better if he used his Quirk. Mirko is still cautious and Izuku believes Katsuki wouldn't do this without a plan. Ochaco believes in both her teammates when Mirko lets Katsuki take the lead. Takeshi is worried about using all of his dangerous Quirk, and Katsuki tells him to stop talking and just do it. Izuku tells him to trust them and reassures it with a smile.

Katsuki ask Ochaco to float Takeshi and himself as high as possible. As they continue to fly outward, Katsuki tells Takeshi to let it all out. Takeshi releases all the stored Poisonous Gas while Katsuki blows it up with his Explosion. Ochacho returns them to the ground and Takeshi removing his hood thanks them all.

After, Mirko's "team" had to talk to the police and explained the situation. Due to the range of the poisonous gas it made the local news and with help of the civilians a petition was made to shorten his sentence.

Back at school All Might ask his students how their first Team Up Missions went and wants to hear the feedback. Class 1-A begins to ramble, and All Might tells them their next mission have already being decided. Izuku wonders who his next Team Up will be when he opens his envelope.