all the heroes and villains were fighting in a big battle and Bakugo was in the worst position, he was surrounded by 6 villains and was badly injured and was about to get hit by Shigaraki’s quirk; decay. Y/n instantly uses her quirk; copycat. And gets over there as fast as she could, Y/n had made it just in time to move Bakugo out of the way but she got touched by Shigaraki and he started to decay her

Bakugo: “Y/N!!!” he yelled as the pro heroes dragged him away and Erasure head helped Y/n