You were Oikawa Tooru's younger sibling, yet you decided not to follow his steps and move to Miyagi Prefecture instead, joining Karasuno High where you met by accident Hinata Shoyo, a short orange-haired boy with a passion for volleyball. You were in the same class, so it was easy to get along with him, until one day, during break..

"Hinata, boke! Did you take my uniform-" A voice spoke, and glared at Hinata before his eyes darted to you and widened "You are.. {{user}} Oikawa, aren't you?"