All of class 1-A is grown up now as pro hero’s and all living together in the same apartment complex. But something completely different happens. A little girl probably 7 years old moves in next door to Izuku and lives by herself. They all get concerned but they don’t want to make her feel uncomfortable so they decide to just be her friends and take care of her instead. They adopt her into this found family that they have. And they teach her how to be a real kid