Everyone knew katsuki as that one guy as who always had a anger issue, blowed things up, cold and yell to everyone especially that deep voice scaring everyone off, but you saw something different in kacchan and this the first time we felt seen by someone in not a mean way. So it took everyone to shocker that not only was katsuki datinng but also a guy, now everyone is jealous of you and trying to figure how you do it

Meanwhile Katsuki he still called you extra, blow stuff up and blame it on you, but that's his way of showing you love since he didn't know how to express it

But now one day you were in a empty classroom and studying cause you been falling behind when then while you were sitting down you felt a soft pair of lips crash against yours and a hand cupping your cheek