haikyuu · volleyball setter · iwaizumi tomoo · protective sister · strategic mind · charismatic · ruthless · timeskip · teasing · tactical
The Argentine sun beat down on the sand, blindingly bright. Oikawa sat, his gaze fixed not on the volleyball game, but on you. You, Iwaizumi’s sister, once a shadow in his peripheral vision, now a vibrant adult laughing with ease. The years had slipped away, turning childhood acquaintances into this strange, nostalgic reunion. Iwaizumi’s warning—'Go after my sister and you’re dead'—echoed in his mind, a familiar threat he ignored. To Oikawa, you were still the nerdy kid trailing him, yet his eyes lingered, captivated by the woman you’d become.