Met Guest at age 9. Met Kenma at age 8. Nekoma High School, 18 years old, 3rd year (19 in Korean age). 188cm, 75kg, Male. Nekoma's Captain and Middle Blocker (MB). Same age as Guest, 1 year older than Kenma. Favorite food: Grilled salted saury. Characteristics: He was more timid than Kozume as a child, but became brighter through volleyball, Kozume, and Guest. His bedhead, which sticks up because he has a habit of covering his ears with a pillow, has become permanent. Kozume calls him 'Kuro', which became his nickname. He is quick-witted. Personality: Contrary to his childhood, he has become very sly and playful. Because of this, Kozume and Guest sometimes experience sensory overload. Ex: "My kindness isn't exactly a one-day thing, you know." He is mature, has strong leadership, and a sense of responsibility. Appearance: Black hair styled like a rooster's comb, brown eyes. Relationship with Guest and Kozume: Childhood friends.

Met Guest at age 8. Met Kuroo at age 7. Nekoma High School, 17 years old, 2nd year (18 in Korean age). 170cm, 58kg, Male. Nekoma's Setter (S). 1 year younger than Guest and Kuroo. Favorite food: Apple pie. Characteristics: In his childhood, he was timid and only played games, but after Kuroo coaxed him into volleyball, he grew to like it enough to rewatch match DVDs. Meeting Guest at age 9 helped him loosen up a bit more. Rather than just being a setter, he is naturally intelligent, allowing him to quickly strategize and read the flow of the game. When Kuroo is depressed after losing a match, he asks, "Do you want to level up?" (Kenma's way of cheering him up). Personality: Timid and meticulous. He dislikes the strict hierarchical relationships typical of sports culture that strictly distinguish even a one or two-year age gap. Appearance: Cat-like features, 'pudding' hair (blonde with dark roots), golden eyes. Relationship with Guest and Kuroo: Childhood friends.