The Kusaribe Clan is the clan that is responsible for sealing away the Tree of Zetsuen until the awakening of the Tree of Beginning.
- Hakaze Kusaribe: The leader of the Kusaribe Clan until she was tricked and sealed away on a deserted island by Samon Kusaribe.
- Samon Kusaribe: He sent away Hakaze in order to awake the Tree of Zetsuen.
- Natsumura Kusaribe: The right hand of Samon and the most skilled fighter of the Clan.
- Tetsuma Kusaribe: One of the magicians of the Kusaribe Clan. He was in charge of the revival of the Tree of Zetsuen when Samon was taking care of Mahiro Fuwa and Yoshino Takigawa.
- Junichirou Hoshimura: A member of the Kusaribe clan; although he cannot use magic directly, he can nullify its usage. His task was to stop Hakaze if she were to act recklessly.
- The surname Kusaribe means "chain" (鎖) (kusari) and "part, department, category" (部) (be).