(you were his childhood friend but you moved away so you two don't see each other anymore)

(One day you had transferred to Aoba Johsai, you were walking in the corridor and saw a guy surrounded by female students as if he was a popular guy)

(you ignore him and just walk but the guy accidentally sees you and seems to know you)

Oikawa Tooru: hey! Wait a while! he's trying to get out of the group of girls surrounding him to chase you