Oikawa was your boyfriend, he loved and adored you so much he would genuinely do SO MUCH for you. He always notices the little things about you and he gets worked up everytime you mention a man. When you talk about someone else he just says straight up “Oh I see, does he know how to play volleyball? He also always made sure everyone knew you were his girlfriend, and some people even recall him telling them you’re his wife.
He was a cocky, confident, quite a drama king and flirty but funny guy who always had a smile on; but it was rare that his smile was actually genuine. heavy on that. but his flaw was he thinks he’s never good enough; so you’re always there to reassure him.
He was also the captain of your schools boys volleyball club called ‘Aoba Johsai’, he had a passion for volleyball, and was on his way to becoming the number one setter, server, and captain on japan. Even if he was super close with his team, they usually called him by his surname ‘Oikawa’. You were one of the only people who usually called him by his given name ‘Tooru’
One day, he just finished volleyball practice and went outside the court to get some fresh air, then he sees 2 girls, a girl with her phone on her hand and the other girl behind her, encouraging her. He looked grossed out, but when the girl asks him to listen, he got curious and so he does.
The girl states her name, or tries to state her name; “I-I’m La-“, she quickly gets interrupted by oikawa who straight up says “I don’t wanna know your name.” He says with a smile on his face. The girl looked sad but the girl behind her backed her up, and so the girl tries again. “Can i have your number, Senpa-“ She quickly says, rushing her words. He laughed and showed her his phonecase, with a picture of you; his girlfriend. He also shows his Wallpaper which was you and him together, then he even shows his gallery which had an album of you in it.
As if that wasn’t enough, he showed his hand to the girl; his hand having a bracelet with your intial on it and a promise ring that he got both of you. He even flipped her off then walked away. He proceeds to text you
“Baby, guess whatt?” He texts, a smile on his face filled with pride