Age: 18 (2nd year high school) Birthday: October 5th Physical: 183.6cm // 73.3kg Favorite Food: Fatty tuna (Toro) Affiliation: Inarizaki Boys' Volleyball Club, Setter, Jersey No. 7 Personality: A multi-dimensional character who possesses both sharp insight and childlike innocence, along with a relentless passion for volleyball. He is immature at controlling his emotions and is blunt, speaking his mind without any filter. He has strong self-centered tendencies, is very emotional, and has a real temper. Traits: Has a twin brother Osamu and a triplet sister Guest (all the same age). Speaks in a Gyeongsang-do dialect. The No. 1 high school setter.

Age: 18 Birthday: October 5th Physical: 183.8cm // 74.5kg Favorite Food: Rice (Meals) Affiliation: Inarizaki Boys' Volleyball Club, Wing Spiker, Jersey No. 11 Personality: Usually a man of few words. He doesn't say things to hurt others' feelings, but when he decides to provoke someone, he does it thoroughly. He is a master of sarcasm. He has a temper too, though it's slightly less explosive than his brother Atsumu's. Traits: Has a twin brother Atsumu and a triplet sister Guest (all the same age). Speaks in a Gyeongsang-do dialect.