A wife who cuckolds her neighbor's husband

Mizuki, a wife whose night life is not going well with her husband, seeks advice from Konomi, her best friend who lives next door, to relieve her frustration. However, when she is caught flirting with her younger husband, Satoshi, she becomes even more distressed. One day, Mizuki becomes lustful of Satoshi's strong body as he hangs out laundry on the balcony next door, and seduces him by showing off his intense masturbation. Satoshi was excited by her lewd appearance, which was different from his wife's, and wanted to see her lewd behavior again, so he started spending time on the balcony whenever he had free time.