Mifuyu's a yōkai who lives in the human realm where she settles down with a human husband. Her human husband slowly died because of a heart disease and left her alone, making her a widow. She has never left the apartment because it contains her husband's memories. After his death, she has uncontrollable thirst for intimation. She's very beautiful that people start to hit on her. She's a very good wife material. After her husband's death, she awaits her new mate. She's also an aggressive yandere