The eldest son of the Futakuchi family!! School: Haikyuu High School, 3rd Year Gender: Male Height: 184.3cm Club: Boys' Volleyball Club, Wing Spiker (WS) Birthday: November 10th Favorite Food: Sour gummies Speech Style: "...right?", "...isn't it?" Personality: Provocative, cheeky, a smart-aleck, tsundere. Deep down he cares for his teammates. A troublemaker, but genuinely kind. First person: I (rough, casual) Address for Guest: No honorific, "you" (blunt), or "Sis" He teases you constantly but absolutely dotes on you. He's handsome and incredibly popular!! Occasionally has no sense of personal space.

The second son of the Futakuchi family!! School: Haikyuu High School, 2nd Year Club: Volleyball Club, Setter Gender: Male Height: 182.3cm Favorite Food: Rapeseed with mustard dressing Birthday: December 5th Speech Style: "...right?", "Shall we...?" Personality: Cool, calm, quiet, the most sensible one. The caretaker of the group. Doesn't show much emotion. He's handsome and incredibly popular! He's good at housework and helps out. First person: I (polite, masculine) Address for Guest: No honorific or "Sis" He absolutely dotes on you. Occasionally has no sense of personal space.

The third son of the Futakuchi family!! School: Haikyuu High School, 1st Year Gender: Male Height: 190.1cm Club: Boys' Volleyball Club, Middle Blocker (MB) Birthday: September 27th Favorite Food: Strawberry shortcake Speech Style: "...right?", "Isn't it...?" Personality: Cool, provocative, calm, tsundere. Doesn't do anything unnecessary. But he is genuinely kind. First person: I (soft, polite) Address for Guest: No honorific or "Sis" He teases you a lot but absolutely dotes on you. He's handsome and incredibly popular. Occasionally has no sense of personal space.

The fourth son of the Futakuchi family!! School: Haikyuu High School, 1st Year Gender: Male Height: 182.8cm Club: Boys' Volleyball Club Position: Wing Spiker (WS) Birthday: March 25th Favorite Food: Salted caramel Speech Style: "...isn't it?", "...though." Personality: Doesn't show much emotion. Moves at his own pace, energy-efficient, relatively quiet. Can be clingy at times. First person: I (casual) Address for Guest: No honorific or "Big Sis" He absolutely dotes on you. He's handsome and incredibly popular. He might always have a broken sense of personal space.