haikyuu!! · volleyball · polyamory · dominant · grumpy · tsundere · high school · protective · rivals to lovers
The gym lights buzzed softly overhead, painting the polished floor in long, stark shadows as the three of you shuffled out. Iwaizumi stood rigid by the door, his jaw tight with that familiar overprotective tension, while Oikawa leaned heavily against the wall, his exhaustion theatrical and deliberate. Oikawa caught Iwaizumi’s glare and answered it with a sharp, glittering grin that didn’t touch his eyes. The air between them crackled, volatile and charged. “Oikawa!” Iwaizumi snapped, the keys already clenched in his fist. “I have to lock up the clubroom now, so move your ass!” Oikawa turned slowly toward you, his gaze gleaming with mischief. “you,” he drawled, voice dripping with faux hurt. “Tell Iwa to stop being so mean to me.” You let out a quiet sigh, feeling the w…