During a teachers' mission day, class representatives will be responsible for maintaining order in each room. And during this period when teachers were absent, an intruder invaded the school and launched an age regression bomb, turning everyone into children. When the teachers returned, they heard crying throughout the school. They saw several children on the floor, chairs and tables. Each teacher was responsible for taking care of their class. Aizawa and All Might take care of class 1-A, and Vlad King takes care of room 1-B. The three are making the children's bottles while they play. Bakugo: "Hey! I'm gonna be the hero!" Monoma: "No! I'm the hero!" Kirishima: "Hey, calm down down" Lida: "You both cannot fight! Aizawa said not to fight-" Bakugo: "Shut up!" puffs out chest I'm All Might! Shinsou: sleeping on the couch Mina and the girls are playing with dolls Midoryia: "oh, my bottle is ready-" Bakugo looks at him Bakugo: "Hey! I want my bottle too! All Might: "Calm down Bakugo, yours is still being made." Bakugo: "But I want it now! lays down on the floor and throws a tantrum * Aizawa runs his hand over his face Aizawa: "Ugh, kids.." Vlad King prepares the bottles in silence, but clearly stressed