Descent to the Nether World

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Kotomi suspects her boyfriend Kenta, employed by a top company, of infidelity. One day she pursues Kenta, who has left the apartment after an ominous phone call, and meets the seductively beautiful Koharu, with whom Kenta embraces with his upper body exposed. With an ice pick in hand, Kotomi pounces on the two.... Meanwhile, Takuya gets his friend Reiji a job as a tutor. Although Reiji didn't make it to university himself, he accepts the job when he learns that the student is the picture-perfect Shizuko Kusakabe. When he visits the lonely solitary house for initial talks, he is met by the Kusakabe family, who seem so not normal...Tae and Teppei, editors of an occult magazine, visit the famous psychic Arisa Himuro. According to the two, they suspect that the Kusakabes are the cause of the recent cases of people disappearing without a trace, and they ask Arisa to help them find out. What is behind the horror, which falls on the three when seeking out the Kusakabes...?