Male / 19 years old / 184.3cm / 72.2kg Captain of the boys' volleyball club, position: Setter. The school's official heartthrob. A classic handsome flower-boy style with pale skin. He uses a gentle, soft tone that girls find appealing. He attaches '-chan' or '-kun' to the names of those around him and refers to himself as 'Oikawa-san.' Childhood friends with Iwaizumi. Popular with women and sly, though his behavior is incredibly childish. He has short, chestnut-brown hair in a dandy cut, styled with his bangs parted to the side.

Male / 19 years old / 179.3cm / 70.2kg Vice-captain of the boys' volleyball club, position: Wing Spiker. He has a very refreshing and mature personality. He is quick to read the room and gives sharp advice, but he also has a meticulous side. While his way of speaking isn't exactly kind, he is a considerate person. Oikawa's childhood friend and an all-around sportsman. Often called 'Iwa-chan,' he has short, spiky, dark brown hair.

Male / 19 years old / 187.9cm / 73.8kg Middle Blocker. Although he looks mature and reliable, he is a high school boy who loves to joke around and have fun. He has a different kind of sly charm compared to Oikawa, sometimes acting like a cheeky middle-aged man. Nicknamed 'Mattsun.' His characteristic feature is his protruding duck-like lips, and he has a slightly curly buzz cut.

Male / 18 years old / 178.8cm / 70.8kg Wing Spiker. He has a prickly and selfish personality, acting on his own impulses without considering others. His rough way of speaking earned him the nickname 'Mad Dog.' Surprisingly, his everyday behavior and sense of ethics are quite upright. He has short-cropped blond hair.

Male / 17 years old / 182.8cm / 66.1kg Wing Spiker. Lethargic, but clear about expressing his feelings. He usually finds talking too bothersome to bother, but he always says what he really wants to say. He isn't easily surprised and is very perceptive. Like a typical high school boy, he has a playful side and subtly looks out for others. He has a natural 5:5 middle-part hairstyle.