During his childhood, his parents and young brother were killed by a demon samurai with a distinctive mask. Since then, he has had a strong dislike of samurai and vowed to take revenge but was arrested for attacking one of the masked men and sentenced to death. He was one of the eight condemned criminals offered a chance by Heisuke Todou to take on the identity of a Shinsengumi captain and took the name of Isami Kondo. He has unkempt red hair and has an impulsive personality.