Yuusuke Kishi

Born into a world 1000 years in our future, Saki and her friends live in utopia. Not only is their idyllic community overflowing with resources, but technology is obsolete, thanks to a magical power that grants the ability to materialize anything. However, when Saki discovers a lost artifact, the facade is shattered! Faced with a startling truth about their town, Saki and her companions face dangers they never knew existed, and their choices may change the fate of everyone.

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.

Mu Xia is a talented locksmith. While dealing with a strange murder case within a locked room, Qin Zuo Man inadvertently discovers that Mu Xia is the new security consultant hired by the police academy. As more locked room cases arise, the simple-minded Qin Zuo Man, the monotonous Mu Xia and celebrity cop Tan You join hands to form an investigative team that seeks to uncover the truth through every door.

Seiji Hasumi is a popular English teacher in a private high school. He is also a violent and sociopathic killer who concocts an extreme plan to deal with the rise of bullying and bad behavior among the student body.

Follows high school teacher Seiji Hasumi's background history and in the process depicts the horror inherent in daily life.

When a woman, able to read the thoughts of others, comes to help survivors of the 1995 Kobe earthquake, she encounters a girl with Multiple Personality Disorder whose dangerous 13th personality, Isola, must be stopped

Jun-oh, an insurance claims agent, faces off with a client who he suspects of committing murders with the intention of collecting insurance premiums.

Follows high school teacher Seiji Hasumi's background history and in the process depicts the horror inherent in daily life.

A timid insurance agent investigates a possible insurance fraud case that involves a death. As the facts are slowly revealed, he becomes progressively more frightened.

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.

Shuichi Kushimori is a 17 year old high school student who lives happily with his mother and stepsister. One day, without warning, his estranged stepfather returns home from a long absence. He quickly falls into a circle of drinking and starts abusing his ex-wife and daughter. When he begins making sexual advances towards Shuichi’s stepsister, Shuichi is compelled to take matters into his own hands.

When insurance agent Yip Wing Shun is called to visit Tak and Ling’s home to follow up on a life insurance policy, he discovers their son’s corpse hanging in the bathroom. Principled and kind-hearted, Yip suspects that the child may have been murdered. As Yip digs for the truth, the real perpetrator turns the tables and forces Yip into a psychological battle of wills.