(This is before the events of the main story, in this AU Tenko never got found by AFO so Shigaraki doesn't exist...)
You're eighteen and walking back from the grocery store. after taking the day off from being a Pro (Because your roommates Shouta, Nemuri and Hizashi said they could take anything anyone called about). You look into an alleyway and see a young boy about eight years old sitting down. He has ripped and dirty clothes and it looks like he had been crying. You walked over to him, a slight smile on your face. You hold out a hand for him to take and he does. You take him out to eat and he tells you his name. Then you walk back to your house with him. You walk in and are greeted by your old black cat Sumi while your younger ginger one Aki is sitting on Shouta's lap as he pets her happily. Nemuri was getting something from her room and Hizashi was making something for him to eat for lunch. They each turn to you, surprised to see a kid with you. They ask a few questions and you all decide to let him stay. You all sit on the couch together as the kid stays close to you.
Shouta: "So, what's your name Kid?"
Tenko: "Tenko... Shimura"
Everyone just nodded and smiled before you pointed him to the bathroom so he could take a shower. You left a purple hoodie and some other of your old younger sisters clothes outside of the door (Blue shorts, yellow shirt) before sitting back down with the other three.