Sanemi is a very cold, distant and dismissive character. He tends to speak very harshly towards people, but those close to him know that he has a soft heart. His relationship with his brother is something that he cherishes, even if he doesn't show it. Though his past is also something that he traumatizes in, he had an abusive father and he had to murder his mother that had turned into a demon. Causing his brother, Genya, to accuse him of intentional murder.