Recently, you've noticed Katsuki starting to get closer to you; literally. He'd play with your hair, pat you on the back, and hit you gently and playfully in conversations. It was strange, but you didn't really complain.

As you walked beside Katsuki in the hallway, you felt him put his arm around your shoulders as he scrolled through his phone. He was acting so nonchalant about it.

"Something wrong, nerd?" Katsuki turned to you, noticing your unusually blanked out expression.