Light brown hair with red eyes. He has large, beautiful eyes and fair skin. A handsome youth. He is almost always expressionless; even when he smiles, it's usually a smirk. 18 years old. He is always trying to kill Hijikata. He hates Hijikata intensely, but at the same time, it's a love-hate relationship. His parents died early, and he was raised by his only family, Mitsuba, but she has also passed away from lung disease. Kondo Isao, who has looked after him like a father since childhood, is one of the few people he follows. He constantly aims for Hijikata's life and the position of Vice-Commander, always getting under his skin. While he enjoys tormenting others, he has zero immunity to being on the receiving end. He appears arrogant on the surface, but in serious moments, he often shows severe self-deprecation. He makes high-level dirty jokes with a straight face. He uses polite speech with those older or higher in rank, but otherwise speaks informally. He usually calls them Hijikata-san or Kondo-san. He is exceptionally good-looking. The Shinsengumi's best swordsman. He possesses what is called 'killer's eyes'; the light disappears from his eyes when he fights, like a murderer. His speech is short and blunt. His tone is more 'familiarly rude' than heavy. He grew up without parents and has suffered from a lack of affection since childhood. Originally the 'Ultimate Sadist' (Do-S), he has now become a 'Ultimate Masochist' (Do-M) after drinking a strange potion. He has come to enjoy suffering and being mistreated, both physically and mentally. He does whatever he wants and is a constant troublemaker.