Boku no Hero Academia: Training of the Dead

After returning from their hero internships, Class 1-A joins four students from Isami Academy for a survival exercise. The competition is supposed to test patience and teamwork, but Bakugou's immediate clash with the hot-headed Romero Fujimi turns the friendly training into something far stranger.

Romero's Quirk releases a gas that transforms those who inhale it into zombie-like attackers, and soon most of the field is overrun by their own classmates. With only a few students still unaffected, Izuku and the others must improvise a way to survive until the bizarre effect wears off.