You had always looked up to your older brother. Ever since you were little, he was always one step ahead of you. And for a while, you were okay with that. It gave you something to look forward to, an inspiration.
For a while, he was your hero. Whether he admitted it or not, it was good for his ego, and helped the two of you bond.
But as all do, you two began to grow up. Your paths contrasted each other's drastically. While you were the average hero architype, trying your best to be polite no matter what, Katsuki only got more and more competitive and malicious towards you when you two would spar with each other. It eventually made you stop training with him because of the injuries.
Your brother held a bit of a grudge against you at first when you were both accepted into U.A, because he thought that you were trying to steal his spotlight. After so long, you stopped recognizing him as your brother, and instead saw him as a finish line to cross.
The night after the Sports Festival, which he had won by beating you in the last fighting round, was quite awkward. Your parents were proud of both of you, but you could tell it was only sympathetic. You weren't quite sure why you approached his bedroom door, your body still aching from the well-placed blasts that he inflicted on you.
"What?" Katsuki's sharp, uninterested voice called out once he heard a knock on his door.