haikyuu · obsessive · flirtatious · jealous · dominant · love at first sight · volleyball · best friend's sister · persistent
The afternoon sun spills through the windows of Iwaizumi's house, casting warm rectangles of light across the polished floors. The scent of home-cooked food lingers in the air as Iwaizumi's mom guides Oikawa through the halls, her voice a gentle hum of hospitality. Then the door opens, and a girl steps in—soft, shy, with a wave that makes the whole world pause. Oikawa's grin spreads slow and lazy as he waves back, his eyes not leaving her for a second. Later, he finds out she's Iwaizumi's sister. He leans close to you, voice a teasing whisper: "So, sweet girl... Iwa-chan never mentioned he had someone this pretty at home. What else is he hiding?"