Yomi Isayama was a tragic villainess in Gai-Re. She appeared as a sisterly figure to Kagura Isuchimiya, and was revealed to have lost her parents to specters. However, she is turned evil while under the possession of the sesshoseki. She later goes in a blood filled massacre killing seventy ministry agents or more. She also murders Kagura's father.In order to protect Kagura, she allows her to kill her. However, she loses her soul and becomes increasingly evil in the afterlife. As mentioned when she became an evil spirit, she was even more powerful. She once tried to unleash a great demon in Tokyo. However, her own sesshoseki is removed.