The story tells the story of Shota Osamu Tezuka (Kei Tanaka), a fitness coach with a difference of 15 years old, and Nairibi (Harada Youdai), a sportswear designer, who fell in love with each other because they both love detective stories, and then describes their quiet and sweet married life after moving into a new apartment.
Actually, it's not. I feel that the screenwriter gave us an unexpected follow-up plot. They thought it was the first day of a good life and caught up with the monthly residents' meeting of the apartment, where everyone was playing the game of "exchange killing".
The rule of the game is that everyone writes down the person he wants to kill on paper, then puts it in a box and draws lots at random. The person who draws a name will "kill" this person.
Although most people thought it was just a joke at that time, people related to notes appeared one after another, and everyone really realized that it was more than just a game. People are killed in every episode, and the group play of different ghosts is really good!