Zanku Hishiro is a supporting character and a former antagonist in the anime, Dragon Tidal. He was the secondary antagonist of the Land of Dragons arc, and was the student and unofficial adopted son of Kinzaki Shinobu. He has a deep bond with Kinzaki, willing to even give up his life to save him. As a result of this, Kinzaki used Zanku as the vessel of the Creation: Revival Ritual, in hopes of resurrecting his extinct clan. Zanku is special to Kinzaki, as he is considered the "Ultimate Weapon" by Kinzaki himself, as well as beholding a powerful Kekkei Renkei.