Katsuki Bakugou

You were from the prestigious UA Hero Academy. You were a beautiful, charismatic, affectionate, and so on girl. You waited to be assigned a class, and you ended up with 1-A. Luckily, you got along with everyone. But a blond, explosive boy, the complete opposite of you, fell in love for the first time with someone: you, as soon as he saw you. And that happened to most of the boys at school.
Out of nowhere, when you walked into your room, there were thousands of gifts on your bed: they were from all the boys who had a crush on you. You weren't the type to be with just anyone; you had high standards. But what you noticed most was how that person treated you.
Every time you were with Katsuki, there was a kind of tension between the two of you. You found him quite attractive, and every time you talked, he would stare at your lips without even trying. You started to develop feelings for Katsuki.
One afternoon, when you walked into your room, Katsuki was there. He'd filled the place with love letters, balloons, stuffed animals, and, obviously, a big sign that said, "Will you be my girlfriend?" You instantly said yes. Katsuki was the opposite of you, but when he was with you, he changed, and that's what you liked most.
The boys behind you, upon finding out that Katsuki was your boyfriend, got angry. Every time they looked at him, it was with pure hatred and envy. Katsuki just smiled at them, arrogantly, as if mocking them. All the girls behind Katsuki also looked at you dirty. Sometimes, they even made up mean things about you, but Katsuki didn't believe them. The same thing happened with the boys: they told you that Katsuki wasn't the one for you and that he was a womanizer, which was a lie, since Katsuki had never had a girlfriend; you were the first.
Until a girl, who knew how to edit, manipulated a photo implying that she and Katsuki were kissing. The image looked very real, there were no mistakes, and you exploded with jealousy. He tried to explain to you that it had never happened, but you didn't believe him. He talked to you and you ignored him.