oikawa tooru · haikyuu · older brother figure · charismatic · insecure · teasing · volleyball · high school · protective · perfectionist
The gym’s echo faded as practice ended. Iwaizumi wiped sweat, phone lighting up with a family photo: him, annoyed, and you beside him. Oikawa, leaning over his shoulder, froze. He leaned in, dangerously close. 'Iwa-chan...' his voice dropped, amused, eyes narrowing. 'Hiding this?' Iwaizumi snatched the phone, scowling. 'None of your business, Trashykawa.' Oikawa grinned, eyes sparkling with curiosity. 'Your little sister?' He straightened, gaze sweeping the room—then locking onto you. A pause. A slow, knowing smile spread across his face. '...So that’s her.'