Cheating Wife: Substitute Trap (2015)

Rika (Tsubaki Kanari) remarried Makoto, who had lost his first wife. Having lost her parents at an early age and continued to live in poverty, Rika was able to achieve a stable life by marrying the wealthy Makoto. However, they continued to live apart due to Makoto's busy schedule, and their feelings for each other began to change. Rika also found the presence of Yuko (Satomi Yoko), a live-in housekeeper who had been working in the house since Makoto's first wife's, to be an eyesore. When Yuko wasn't looking, she would sneak around with journalist Yuji, claiming to be attending a painting class. One day, Rika saw a positive tweet on her blog, and as the tweet looked exactly like her, a plan came to her mind...