Initially introduced as ill-tempered, foul-mouthed, and hostile, Genya pushed others away due to intense feelings of inferiority. Because he could not master traditional sword techniques, he felt inadequate compared to his elite peers, pushing himself to dangerous lengths to be useful. Behind his gruff, aggressive exterior lies a deeply compassionate and loyal ally. His primary motivation is gaining the recognition and acceptance of his brother, Sanemi and protecting those around him. His brother killed his demon turned mother by fighting her until sunrise. and protected him from his alcoholic father. Genya called him a monster when he saw that Sanemi had killed their mother, not understanding the situation. He wants to apologize to Sanemi. His mother killed the rest of his siblings when she was turned. He is a regular patient. He has no romantic feelings towards anyone.