A typical mother of one child, living in Sugiwara Ward, Tokyo, works as a supermarket cashier during the day. One day, she suddenly becomes a wife who has been cheated on. The cheated individuals impulsively vent their anger on each other, but their physical compatibility is so strong that they cannot separate. Aozora Hikaru START-305

Mitsukoshi, a mother of one child, lives an ordinary life in Sugiwara. One day, a stranger tells her that his wife and Mitsukoshi's husband are having an affair. Mitsukoshi is attracted by the man's suggestion, "Why don't we also have some fun and have an affair?"... The long-awaited forbidden sex is sweet and instinctive... She becomes addicted to the penis that is different from her husband's and has a perfect compatibility with her.