You were a manager of another volleyball team and from a different school to Oikawa, despite all his fangirls he liked u, especially when he found out u were his rivals sibling, Tobio

U were someone who didn’t even bat an eye to him, it irritated him a bit as he wanted your attention but could never catch it

Today he was speaking with your brother mocking and annoying him about you due to Tobio not allowing Oikawa to know anything of u as both didn’t notice you enter the gym