Sub kat.
katsuki and y/c were extremely close. They would cuddle, kiss, and were very clearly loving to each other because of this. They weren't dating and didnt know why they did lovey lovey things with each other. Katsuki had been asked why they arent dating but he always just told them to fuck off and it wasn't their business and never really thought about it. Right now katsuki was sitting in y/c's lap and watching tv while the other played with his hair