Ichiryu Obara

Fifteen-year-old country girl Suzume Yosano has to move to Tokyo to live with her uncle due to her father's transfer. She bumps into a mysterious man who ends up taking her to her uncle's place after she gets lost. Turns out, Suzume will be seeing him a lot more often once she starts school because... he's her homeroom teacher?!

The story continues from the Japanese SIGNAL drama series. In 2021, a limousine taxi driver causes an accident on a highway, and a high-level government official dies in the accident. The cold case investigation unit, including Kento Saegusa and team leader Misaki Sakurai, have doubts about the case. Meanwhile, in 2009, administrative officers die consecutively in car accidents. The police announce these deaths as accidents. Takeshi Ōyama believes that these deaths were not the product of simple accidents. At 11:23 pm, a walkie-talkie turns on and makes a connection between the future and past. Kento Saegusa and Takeshi Ōyama face the threat of bioterrorism.

Jun is a girl whose words have been sealed away so that she cannot hurt anyone with them. But, one day, she is nominated to become an executive member of the "community outreach council." On top of that, Jun is also appointed to play the main lead in their musical...

Erika Toda joins a law firm headed by Serizawa-san, on the first case she meets Enomoto Kei of Tokyo total security who unlocks Serizawa who has accidentally been trapped in a vault. Form thereon the trio solve 10 cases related to the locked room. Enomoto always makes a small scale model and thinks technically in terms of security and locks to solve cases, while Serizawa assists by hinting some circumstantial evidences. Serizawa is always ready to take credit of new found fame.

Iori Igarashi works as a radiographer at a general hospital. He has been depressed, because An Amakasu, whom he loves, has decided to travel abroad to Washington Medical University to learn more as radiologist. The members of Radiation House encourages Iori. One day, An learns that her father is in serious condition. Her father was the only practicing doctor at a small clinic on a remote island. When An arrives, her father tells her to be a doctor who sees patients as a person and not a disease before he passed away. An decides to stay on the island because of a patient that her father cared about. A massive typhoon soon hits the island and a landslide then occurs. An unknown infectious disease spreads afterwards on the island. Iori knows that An is struggling on the remote island and he makes a decision for An and the residents of the island.

Agetarō, a third generation tonkatsu shop owner, one day makes a bentō delivery for the first time to a club where he experiences an uplifting feeling he's never had before. Furthermore, he is wholeheartedly set on winning the heart of Sonoko, with whom he fell in love at first sight, so he decides to be both a tonkatsu shop owner and DJ.

A legendary detective duo secretly married to each other must hide their relationship while investigating a string of murders that entangles their pasts and threatens to tear both their family and partnership apart.

Enomoto Kei is a security "otaku" working for a security firm, devoted to improving the securities system on a daily basis. He is not an easy person to familiarize oneself with, always collected and calm, unapproachable, a maniac in Physics, Science, Architecture and profound in other basic theoretical foundation. He is certain and proud of the fact that there is no key which he cannot unlock. One day, Kei is asked to help reveal a mystery behind a locked room murderer. While he lacks any interest in solving the mystery, he is inevitably intrigued by the term, "Closed Doors" and decides to take on the position. He works side by side with Aoto Junko and Serizawa Gou, who are lawyers working at a major law firm. Junko is pure and forward, acting upon her instincts while Serizawa is a prideful elitist who sees time as money, and therefore, will not take on any job that is unprofitable. Possessing a vast amount of knowledge and acute insightfulness, Kei is able to unlock the closed doors and unravel the secrets leading to the solution. Never before has there been a drama focused solely on closed doors.