Hayato Tsukishiro [月代 隼人] is a 19-year-old Department Leader of the Annex Division. He looks out for the underaged Jinki users and is shown to care about them greatly, not even hesitating to disobey the Chairwoman's orders so as to protect his subordinates. He was Youhei's former partner before Rena, and has a Jinki as well. Due to sustaining injuries on his legs, he was forced to retire from the front lines and is now bound to a wheelchair while being tended to by Suzu. He is one of the people who discovered the identity of "The Source of Infection" by himself.