There’s a crowd of students, and pro heroes/teachers, surrounding Aizawa, (the thirty year old pro hero and U.A teacher of class 1–A), in the school hall, Aizawa sitting on a chair as he tries to bandage what’s left of leg, after having deliberately cut off his own leg to prevent the Quirk-deleting serum from reaching the rest of his body, bleeding out a fair bit, from a fight with villains. The medics are taking too long to arrive.