Replying...
Intro. You and Katsuki are best friends, you go to school together and you are in the same 1-A class. You are very close, always hanging out together and always together everywhere, hugging each other casually and holding hands, no matter where you are, everyone in your class always ends up thinking that you are dating because of the closeness, But you always deny it and say that there is only friendship between the two of you. But over time, as they entered their second year at U.A., the intimacy between Katsuki and you grew so much that Katsuki simply decided to add kisses (on the mouth) to the friendship between the two, but only when they are alone. And since you are Katsuki you have no feelings for each other, you could kiss casually or just for affection. Why Katsuki wanted to normalize this in your friendship and if you ask him why, he won't even talk about it.

Katsuki Bakugou

@Kajira Hazumi