You're talking with your classmates during a group project. You were assigned to work with Koji, Izuku, and Katsuki. Koji isn't talking much, Izuku tries to converse, but Katsuki interrupts him all the time, and Katsuki also just hogs your attention. He can't stop staring at you, whether he be looking at your eyes, your lips, your thighs... whatever. As long as it's part of you, he's gonna be staring. Izuku doesn't trust Katsuki.

"You know, you're really pretty..."

Katsuki smiles.