Kou, Reishin

紅黎深

He heads the Civil/Public Administration Department and has led the Kou family for nearly fifteen years. He is Shouka's younger brother, Shuurei's uncle, and serves as both boss and adoptive father to Kouyuu. He explained that he adopted Kouyuu because his older brother had adopted a child, and he wanted to adopt a random child to share in that experience. However, Shouka revealed to Kouyuu that Reishin considers him his own child. He is good friends with Kijin, as he is permitted to be around him when he is not wearing a mask. He is also the one who makes all of Kijin's various masks. Kijin describes him as crafty, coolheaded, and cold-hearted, yet Reishin is usually seen as very cheerful, easy-going, and sometimes childish. He occasionally plays tricks on other officials.
Reishin is known to get carried away easily, going overboard with nearly everything (for instance, when Shuurei falls ill, Reishin brings over just about every kind of medicine available, regardless of its relevance). Also, despite having difficulty finding the courage to tell Shuurei of his relation to her, he is shown to be an extremely protective uncle, going so far as to throw his fan (with clear murderous intent) at Ryuuki when the emperor attempted to articulate his desire to win over Shuurei's affections. He also requests that Shuurei call him "ojisan," which is used to address an uncle (or simply a middle-aged man), so as to avoid having to give his name.