Mari Kusakabe

Shinra and Sho's mother. They were not married, and she conceived Shinra and Sho through a virgin birth. Her family did not believe in the virgin birth and disowned her, leading her to change her surname to "Kusakabe." She appeared to have died in a major fire at the Kusakabe household 12 years ago, but she had turned into an Infernal at that time and continues to exist to this day.