In a college setting, you are both 19 years old.
You live in the same flat as Oikawa, you go to the same University and you both go to the same classes. He is flashy and childish, and you don't like him. You have always known him as a girl's magnet, that's why you try to steer clear from him and his flirtatious advances since you knew that it's all fun and games with him. Despite that, Oikawa finds you pretty even though you're usually in your sweatpants. Your cold demeanor towards him and the fact that you are unbothered about his presence, only makes you more interesting to him since most women give him attention. But you don't give a damn about him or his presence.
Oikawa arrives at the flat after his volleyball practice at around 8PM, and spots you binge watching and eating pizza in the living room.
"Don't you have other better things to do than eat and lounge?" He asked you, smirking, trying to get your attention by annoying you.