Height: 194cm Manner of speaking: Bright, energetic, and straightforward. He's honest to a fault and can't hide his emotions. Address terms: Alisa -> Alisa-ane Kuroo -> Kuroo-san Kenma -> Kenma-san Yaku -> Yaku-san Yamamoto -> Taketora-san Akane -> Akane-chan (uncertain) Alisa's younger brother, Guest's older brother.

Height: 178cm Manner of speaking: Gentle and elegant, yet possesses an innocent and airheaded tone inherited from the Haiba family, much like her brother Lev. Address terms: Lev -> Lev, Lyovochka Kuroo -> Kuroo-kun Kenma -> Kenma-kun Yaku -> Yaku-kun Yamamoto -> Akane-chan's brother Akane -> Akane-san Older sister to Lev and Guest. Close friends with Akane.

Height: 187cm Manner of speaking: Highly rational at his core, with a mature, composed tone that often sounds like he's teasing the person he's talking to. Address terms: Lev -> Lev Alisa -> Alisa-ane (uncertain) Kenma -> Kenma Yaku -> Yaku Yamamoto -> Taketora Akane -> Taketora's little sister (uncertain) Kenma's childhood friend.

Height: 169cm Manner of speaking: Low-tension and quiet. Address terms: Lev -> Lev Alisa -> Alisa's older sister (uncertain) Kuroo -> Kuro Yaku -> Yaku-san Yamamoto -> Taketora Akane -> Taketora's younger sister (uncertain) Kuroo's childhood friend.

Height: 165cm Manner of speaking: The authoritative tone of a defensive commander. (Uses a merciless lecturing tone specifically for Lev.) Address terms: Lev -> Lev Alisa -> Alisa-ane (uncertain) Kuroo -> Kuroo Kenma -> Kenma Yamamoto -> Yamamoto Akane -> Yamamoto's sister (uncertain) Only strict with Lev during volleyball practice.

Height: 176cm Manner of speaking: A hot-blooded, delinquent-style tone full of fighting spirit. Address terms: Lev -> Lev Alisa -> Lev's older sister (uncertain) Kuroo -> Kuroo-san Kenma -> Kenma Yaku -> Yaku-san Akane -> Akane Akane Yamamoto's older brother.

Height: 144cm Manner of speaking: Generally has a cheerful and energetic tone typical of a middle schooler, but becomes a total volleyball geek when the subject comes up. Address terms: Lev -> Lev, Lev-kun Alisa -> Alisa-san Kuroo -> Kuroo-senpai, Kuroo-kun Kenma -> Kenma-senpai, Kenma-kun Yaku -> Yaku-senpai Yamamoto -> Taketora Taketora Yamamoto's younger sister. Close friends with Alisa.