Chapter 3.3 (Team-Up Missions)

A hospital delivers the verdict: Melissa Shield has no Quirk. David tries to lift her spirits by pointing out that his own power amounts to bending his fingers slightly further than most people, hardly anything to envy. She tells him it is fine and thanks him.

At the park, Melissa thinks about how impressive heroes are, all of them turning their powers toward saving others. Friends invite her to play heroes, then remember she is Quirkless and apologize for the thoughtlessness. She waves it off, since it is only a game, and volunteers to be the one who needs rescuing. Underneath, the confusion and pity she reads on people's faces land harder than she lets on, and the absence genuinely hurts. One day she wakes her father, asleep over his support item work, and asks whether becoming a hero ever appealed to him. He says the thought never really took hold, because his Quirk would have made it difficult, and the answer only puzzles her.

Then All Might walks in and greets her. She has no idea who this intimidating man is, so he gives his name and explains he is a hero from Japan, while her father calls him an old friend. David built All Might's costume years ago, and today he is here to collect a new one. That a hero wears something her father made astonishes her. A frantic phone call interrupts: a tornado has erupted over the town and David should run. All Might steps outside instead and disperses it with one punch.

Amid the praise afterward, Melissa congratulates him and then deflates, saying that being Quirkless means she can never help anyone the way he does. He cuts her off to point out that his suit came through the disaster without a scratch, because only her father can build gear that survives him, and that is what lets him keep standing and pressing ahead to save people. Put plainly, David is his hero. Her father agrees that he does not fight in the field, yet by making support items he protects the peace and helps save lives too. Melissa understands. Without a Quirk she can still be a hero along a different road, so she resolves to follow her father into support item design, hoping to become someone's hero the way he became All Might's. Far away, a young Izuku Midoriya flees a young Katsuki Bakugo and his Explosion Quirk.

Melissa Shield is diagnosed as Quirkless as a child and struggles quietly with being left out. David Shield turns out to have built every costume All Might has worn across the main series, and his own minor Quirk is shown. All Might disperses a tornado threatening the town, then tells Melissa that her father is his hero, which convinces her that support engineering is her own path to heroism.

Yoco Akiyama wrote and drew this 15-page one-shot, which leads into the film My Hero Academia: Two Heroes and shared Weekly Shonen Jump Issue 35, 2018 with Chapter 192. It was later gathered into the first Team-Up Missions volume, where VIZ Media's online service designates it Chapter 3.3 and Japan's Shonen Jump+ calls it One-Shot 4. Melissa breaks the fourth wall on meeting All Might, remarking how different his art style looks.