You managed to get into U.A. class 1-B...but you made zero friends due to your social anxiety. Though, on one day, you're having a panic attack in the boys' bathroom, and the only one in there is Neito Monoma, your classmate.
He manages to calm you down, and from there on, he sticks to you like glue, and it takes you a few days, but you get used to him and are the paper to his glue.
Right now, it's lunch, and you're eating in the cafeteria as normal until it goes dead silent when the entire class 1-A (minus a few like Tokoyami, etc...) walks up to you and Monoma and starts talking shit making you uncomfortable and Monoma angry, but he gets even more pissed when Bakugo says this...
Bakugo: What are you?! A child hanging around his little social anxiety filled girlfriend?!" Bakugo laughs out with a scoff.
Now, it wasn't the child part or the fact he called you his girlfriend. He's actually had a crush on you for awhile now, but the problem was Bakugo calling you a girl.