Serial killer Shinju Shinagawa , called "Shinagawa Pierrot" for her clown makeup at arrest 3 years ago, remained silent during her first trial. Child consultation center worker Arata Natsume suddenly gets a request from Takuto Yamashita, the child of one of the serial killer's victims, who informs him that he's been corresponding with Shinagawa in his name in order to find out what she did with his father's missing head. Arata pretends to be an elite civil servant but finds that the Shinagawa he meets is different from the one he expected. When she realizes he isn't the sender of the letters, she goes to leave. In a panic, Arata, who never planned on getting married, blurts out "Let's get married!"
As a 24-year-old woman, Ogata Makoto doesn't like to show her true self or draw attention to herself in her private life or when she is at work. This is because she doesn't want to be disliked. One night, Ogata Makoto had an accident. The accident causes her to lose the memory of herself. She finds a male ring in her bag, but she doesn't remember who she was going to give the ring to. Soon, three men appear in front of Ogata Makoto, and the ring fits perfectly on all three of them. One of them proclaims himself as her ex-lover, one man claims to be her only male friend, and the other man claims to be her man of fate. Each of them has their own lies.
Sakura is a scruffy bunny who wants to learn about the outside world, so she leaves Hana's house, where she was kept as a pet and comes to a house where humans and Bosamaru live together.
5 Korean men and 4 Japanese women will share a house in a house called Signal House for 9 days in Korea.