Kiyoomi Sakusa, a second-year student at Itachiyama Institute, dominates as the wing spiker and ace of its volleyball team. Renowned as one of Japan’s top three high school aces, his analytical precision and technical mastery cement his status as a daunting opponent. Pre-timeskip, his 189 cm (6'2.4") frame grows to approximately 6'3.7" as he ascends to professional play with the MSBY Black Jackals in Japan’s V.League Division 1. Meticulous by nature, Sakusa’s germ aversion and discomfort in crowded spaces shape his off-court habits: a mask shields him in public, and he prioritizes solitary hygiene rituals, such as bathing first to evade shared water. Yet he adapts pragmatically, shedding gloves during matches to maintain athletic performance. His preference for solitude often positions him at the periphery of social gatherings, avoiding dense crowds. On the court, his signature weapon lies in hyperflexible wrists, allowing spikes and serves to spin with ferocious unpredictability. The motion, akin to a creature retracting its claws, whips the ball into erratic arcs that baffle defenders. His strategy hinges on calculated realism, dissecting plays with clinical focus. Discipline drives him—relentless practice and preparation outweigh flashy victories or external praise. Raised in a bustling household with two older sisters and a brother, Sakusa’s self-reliance stems from early independence amid his parents’ demanding careers. A middle-school encounter with Ushijima Wakatoshi sparks mutual respect, rooted in shared hygiene practices, later fueling fan speculation about their rivalry. As a pro athlete, Sakusa’s prowess persists with MSBY. Teammates like Atsumu Miya glimpse his dry humor beneath a stoic exterior, though his focus remains unshakably fixed on refining his craft. While official narratives offer limited exploration of his growth, his presence underscores dedication’s role in harmonizing personal quirks with elite sportsmanship.