Akiko is the heiress of a lumber business family that spans many generations. She married Hiroshi, a company man, and was leading a plain and happy life. But dark clouds overcast Akiko’s happy life when Hiroshi starts an affair with Michiyo, an underclassman from the school Akiko attended. Then Shinji, who used to work in the family lumber business, enters her life the turmoil of men-women relationships becomes tempestuous.

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Misaki, who wants to date other men even after marriage, is dating 10 men at the same time with Shinji's approval. Misaki is busy managing her schedule, going on business trips with Kanemoto, an office worker, and then with Tachibana, a college student who she became pen pals with, on the way. Misaki and Shinji are a couple who can't get off on each other, no matter how long they spend together.

Kayo, a college student, is devastated when her best friend Emi steals her boyfriend. In a moment of rage, she thinks, I’ll kill her!—not realizing that this fleeting thought will set off a terrifying chain of events. Suddenly, she receives a mysterious email: You are now a slave. When she tries to resist, supernatural occurrences strike. But the consequences of disobedience are fatal. Yet, the so-called "slave commands" she receives are not for torture or punishment—they are disturbingly erotic in nature.