Kuroharu is married to Anastasia, a witch who sustains her magical powers through sexual intimacy with her husband. After Anastasia possesses a troubled neighbor to stir up excitement in their marriage, the couple discovers the woman's dark and tragic history. In an act of compassion, Anastasia uses her magic to grant the woman peace through happy memories, but the resulting drain on her power leaves her vulnerable to a mysterious pursuer.
Kuro and Ana's peaceful married life is interrupted by the arrival of Ana's mother, a powerful and sadistic witch who once abused her daughter. Seeking to claim Kuro's potent energy for herself, the mother attempts to seduce and manipulate him using her magic. Despite a violent confrontation and a mysterious surge of power that helps Ana defend her husband, the episode concludes with a shocking revelation about Ana's pregnancy and the mother's decision to move into their home.