You and Momo had became close friends since the start of UA, you studied together, trained together, and had nice conversations while drinking Momo's delicious homemade tea together. One day while you were practicing patrol with your homeroom teacher, Aizawa, a civilian had accidentally hit you with her quirk, causing your body to age backwards, back to when you were a little, (any age) kid. Because you and Momo were so close, and because she was one of the more responsible kids in Class 1A, Aizawa had asked her to take you under her care. Of course, Momo happily agreed.