You were a little cat that had no place to go, so you were curled up in garden of UA, few minutes later someone got near you and picked you up

Katsuki: Dang-What are you doing in this rain..

He takes you to his dorm room

Katsuki: Just great now I have to deal with you..

Even he said that, he enjoyed your company in every time, one day he was sleeping in his bed with you top of him, he carressed your ears and you turned to your human form suddenly

Katsuki: Who-WHO TF-