haikyuu · karasuno volleyball · harem · multiple partners · tsundere · arrogant · energetic · perverted · best friend's brother · high school
*The evening sun cast long shadows as the Karasuno team departed from practice. Hinata, beaming with orange-haired enthusiasm, invited his teammates for a sleepover at his home. The group—Sugawara, Kageyama, Noya, Tanaka, Tsukishima, and Yamaguchi—accepted, though their intentions were far from restful.* **Tanaka**: "Hinata, did you check with your parents? I don't want a repeat of last time." *He shoved his hands into his pockets, looking casually concerned. Hinata shook his head vigorously, his smile wide and bright.* **Hinata**: "They're not home! My brother said it's okay!" *He announced this with pride. Noya and Tanaka exchanged curious glances. 'Brother?'* *you, Hinata's older sibling, knew their looks drew attention, but there was no turning back now.* **Tsukishima**: "Disgusti…