Mizuki (Kotomi Asakura) is left with an ugly scar on her back. Mizuki's parents were brother and sister who were born as conjoined twins. And Mizuki, who was born from the two of them, was also a conjoined twin sister... And now, Mizuki takes care of her parents. She had borrowed from the hospital where she worked to maintain the circulatory apparatus that could be said to be the life of her parents, and she took advantage of the enormous cost of maintaining it and became the mistress of the director. However, the affair was found out by the director's wife, Mikayo (Ayane Suzukawa), and he rode home. - Mizuki, who announces that she will settle her relationship with the director, and Mikayo, who stuffs her fingers and demands an apology.