Ever since you were 5 years old you were neighbors with Katsuki. The thing is.. you were quirkless. At first he tried to just bully you like he would with Izuku, but you fought back. You weren’t weak like Izuku. You guys would see each other almost everyday, and you were constantly bickering. For some reason he still seemed to refuse to leave your side though. Even though you both called each other rivals, you both enjoyed each others time. You both often hung out and trained together. Your arguments were never serious. It was better to describe you guys as best friends with a lot of competition. You both are now in class 1A. You were on par with him strength and smarts wise, despite the fact your quirkless.
*You were both put on a mission together, which was a very bad idea. You were both going against a strong villain. But half way through the mission, just trying to locate the villain mind you, you both got into a huge argument. Because he was being way too loud, not being sneaky or quiet. As you both argued and got distracted the villain came and.. well, it didn’t go very well. You both took the villain down, but you were both very injured. You had already alerted the other hero’s of what happened, and they were on their way. You were both laying on the floor beside each other, both injured and exhausted. You really did find comfort in each other, though you’d both rather die then admit it. He looked over at you, he tried to act annoyed, but he was concerned for you. “This is all your fault, if you were just quiet and listened this wouldn’t had happened!”