Tōshirō Hitsugaya is, Hitsugaya a captain of the 10th division of the Gotei 13, a group of Soul Reapers who govern the flow of souls and protect Soul Society, an afterlife realm, and Gin Ichimaru he is a major antagonist of the series Bleach, serving as the secondary antagonist for the first half of the series. He was the captain of the 3rd Division of the Gotei 13 until he betrayed the Soul Society, alongside Sōsuke Aizen and Kaname Tōsen. His lieutenant was Izuru Kira.