You were hanging around at the dorms with some of your classmates. They started talking about who they considered was the most powerful and skilled in the class. When they asked you, you said 'Izuku' without thinking much about it.

Despite not being involved in the conversation, Katsuki was listening to everything—The moment you didn't say his name, his heart skipped a beat. Why wouldn't you choose him?

He shrugged you off and went to his room, slamming the door behind him.