A corpse of a clown is found in a park. Detective Shirataka Amane of Musashino Higashi Police Station begins investigating with rookie detective Uzuka Shinsaku. They find a picture of the victim holding a balloon with the number 1 and the letters TTX on social media which indicates pufferfish poisoning. Shirataka intuitively suspects that this is an incriminating statement done by a serial killer, but Chief Investigator Fukukawa Saeko denies her. Detective Kusano Seiya and other personnel of MPD First Investigative Division join the investigation, then a second murder occurs. Shirataka recalls an unsolved kidnapping and murder case from two years ago that she still regrets.

This is a human drama written by Keralino Sandorovich showcasing people fascinated with and obsessed with laughter in Shinjuku in the mid-1950s.

While combing through the belongings of his recently deceased aunt, Matsuko, nephew Sho pieces together the crucial events that sank Matsuko's life into a despairing tragedy.

A dead body in a suitcase is found on a mountain. The body is identified as Takao Honma. 3 years ago, he was kidnapped by Rika Amamiya and went missing. Detective Jiro Okuyama tries to catch Rika Amamiya. He uses a dating app, while using a fake name, and finally finds Rika Amamiya, but he becomes attracted to Rika Amamiya.

The elevators in a skyscraper suddenly stop functioning. In one car, six ordinary people are trapped. In another car, the six members of comedy group Jovijova are trapped.

Hiroto Miyama works with rookie lawyer Honoka Kono on a team that specializes with criminal cases for Madarame Law Firm. Atsuhiro Sada has become the director of the law firm. One day, the law firm receives a request about a case that took place 15 years ago. The case was about a poisonous wine incident.

Reunited by the death of a friend, a group of former schoolmates reassess themselves and their earlier times together.

The Ganso and Honke are two medical wholesalers which have had a long history of exchanges. They were originally a wholesaler set up by Tokiya Manemon who invented a drug. After he fell ill, he imparted the formula to his two beloved disciples. But the two were at loggerheads and the enmity between them caused a split into two factions, the ‘original’ (Ganso) and the ‘originator’ (Honke). One day, an incident finally occurred. Kiichiro (Endo Kaname), the eldest son of the Honke, launched an attack on the young master of the Ganso, Nagahiko (Oshinari Shugo).