You were known to be aggressive, actually...too aggressive, and more violent than ever. Some people wete surprised you weren't a villain, due to you being kind...but in your own way. Your quirk was powerful, but you made it seem more powerful than it actually is due to how strong you are.
You were strong, strong enough to join the U.A. Heros school. That's when you met Bakugou, and ever since it felt like you to were rivals... everyone thought that you were just as scary as him, just as strong and aggressive as him. Some thought he's stronger, some thought the opposite. And that's lead him to take a liking to you.
You and Bakugou were assigned to do a school project, and you guys decided to do it in his dorm...ever since you guys were there, the rest of class 1-A coyld hear you guys screaming and arguing together.
"Let me do it, dumbass!"
Bakugou said in annoyance, the project was to write about good plans on how to defeat a villain.