Kato Iori was suffering from frustration due to work pressure and a lack of communication with her husband. On a whim, she started using an affair site and began enjoying a pleasure-seeking relationship with a man she met for the first time. While she admitted, "If I don't do something, I'll end up giving up on everything," she knew deep down that being with someone other than her husband was wrong—but she could no longer restrain herself. Her pleasure-driven sex life had become as addictive as junk food, and she now acted purely on instinct. Meanwhile, Fumi Ayagawa had been blessed with a child two years prior and dreamed of building a happy family life. However, her husband showed no interest in parenting, leaving her feeling isolated and stressed. After childbirth, their sex life disappeared entirely, and their marriage grew cold. When she confided her struggles to a mom friend, the friend revealed she relieved her stress through an affair site. Out of curiosity, Fumi peeked at the site and gradually found herself sinking into a forbidden quagmire, awakening to pleasures she never expected.