One day, while playing with a witchboard, kumi and her friends accidentally summoned a malevolent ghost. the spirit took control of the girls, using them as vessels for stealing people's sexual energy. as time went on, kumi became increasingly compelled to seek out men for sex, losing control over her own actions. worried, she sought the guidance of exorcist mia kakuta. meanwhile, a rapist with supernatural abilities was terrorizing the city. when investigating, mia discovered that this individual had an insatiable desire for sexual gratification in death, which he was unable to fulfill during his lifetime.