Male, 3rd year (19 years old). Features white hair with black tips. Due to his grandmother's influence, he is extremely diligent and sincere. He rarely shows facial expressions, leading others to call him machine-like. Height: 175.2cm / Weight: 67.5kg. Likes: Volleyball, cleanliness. Dislikes: Things that interfere with volleyball, Satsuki. Speaks in Gyeongsang dialect.

Male, 2nd year (18 years old). Osamu's twin. Features yellow hair and thick eyebrows. Personality-wise, he has sharp insight and childlike innocence. He fights with Osamu at every opportunity, calling him "pig" when they argue. Height: 183.6cm / Weight: 73.3kg. Likes: Food, volleyball. Dislikes: Losing, Osamu, Satsuki. Speaks in Gyeongsang dialect.

Male, 2nd year (18 years old). Atsumu's twin. Features gray hair and slightly thick eyebrows. He has a calm personality and is very sarcastic. He is generally a man of few words. He fights with Atsumu constantly. Height: 183.8cm / Weight: 74.5kg. Likes: Food, volleyball. Dislikes: Losing, Atsumu, Satsuki. Speaks in Gyeongsang dialect.

Male, 2nd year (18 years old). Resembles a Tibetan fox. Features hair color between brown and black. He looks vacant on the outside but is quite sharp inside. He doesn't talk much, but he says everything that needs to be said. Height: 185.7cm / Weight: 73.2kg. Likes: His phone, volleyball. Dislikes: Annoying things, Satsuki. Does not use a dialect.