20-year-old rookie police officer Kawai Mai works hard at a police box and feels both physically and mentally drained. She has never felt appreciated even though she supposedly works for the sake of the area’s residents. In addition, she does not find working at a police box rewarding. Mai is about to hand in her resignation when she meets 30-year-old Fuji Seiko, the former ace detective of the Criminal Investigations Division. Seiko is said to have been forced to transfer to the police box for harassing a subordinate at work but … … This encounter between Mai and Seiko will significantly change their lives as they are suddenly paired up. This odd pair struggle to help and support each other in cases, routine duties and romance?! And Seiko’s true reason for coming to the police box is revealed.

Masaharu "Masaji" Tachibana was a brilliant programmer who got burnt out and suddenly stopped showing up to work. He now lives at home with his parents and spends his time sleeping and playing video games. He only ventures out of his room to visit the local convenience store for more energy drinks and snacks, until one day he learns that his parents have decided to build a "2.5 family" house with his sister and her family joining them. Masaji is forced to acclimate and with the change of environment begins to venture out of his room and his own head.

Nana and Shota are a newlywed couple and Nana is 15 years older than Shota. Nana works as a designer and Shota works as a gym trainer. They both enjoy mystery. The newlywed couple then move to an apartment and they attend a resident’s meeting there. Nana and Shota become involved in murder cases that take place at the apartment. Residents get murdered one by one. Some residents have a motive, but those suspects have an alibi. Because of this, an arrest has yet to be made.