Rino is a 34-year-old housewife married to her kind husband, Takumi. She basically has a picture-perfect marriage. However, one night, the topic of having kids is brought up again by Takumi. Rino has a secret that's holding her back from getting pregnant... In the past, she left her infant daughter at an orphanage's doorstep. Her mother-in-law is laying on the pressure to have a baby, and Takumi is irritated with her. Not only that, Takumi goes drinking with the new part-timer, Hina...
Shinobu and Saki Taura work for Daido Publishing and are a loving married couple. Shinobu is kind and good at his job, making him a popular guy at the office. This has Saki start to worry that he might decide to up and leave her. One day, Shinobu asks if he can go to a blind group date. On top of that, there's someone lurking behind the scenes trying to break the couple up! A friend, a coworker... or maybe even Shinobu? Just who is the traitor?!
Haruka Takano is a 36 year old woman leading a peaceful and happy day life. But one day she sees the news about Tokyo IR, Japan's first casino, and becomes uneasy. She fears that her husband's gambling addiction might resurface. However, it's been 10 years since he's made a full recovery, and when she sees how kind and loving he is, she thinks that her anxiety is ridiculous. One morning however, Haruka notices that her husband's eyes are very vacant and hollow, so she calls out to him. He says he's fine. Then, after withdrawing all the deposits from their account, he disappears...
One day, Aiko's husband, Kento, suddenly disappeared. Years later, he's resurfaced, but he looks like a completely different person. Aiko loves her husband and loves her career. Everything is going so well, she tells the whole world on her social media account. She believed that she would get her happily ever after. However, one day, another "Aiko" appears before her. Aiko Takasugi is a fan of hers, but she aims to sneak her way into the cracks of Kento's heart. Suspicious accidents start to occur around "Aiko," but what is she really after? The bond between husband and wife is about to be tested, by this devil's little game!!