Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.

A princess from the Land of Jewels comes to Earth with the Kirama Stones to find individuals with strong "shining spirits" known as Kiramental to become the Kiramagers and fight the threat of the Yodon, an imperial army of darkness.

Shogo Kai is a lawyer at one of the big 4 law firms in Japan. He is good at his job, but he is arrogant. Shogo Kai only thinks about winning and he thinks the only way to satisfy his clients is to win. He is getting close to becoming a senior partner at the law firm. Shogo Kai's boss worries about his focus on winning above all else. As a condition of his promotion at the law firm, his boss asks him to hire a young lawyer as an associate. Shogo Kai interviews prospective young lawyers and meets Daiki Suzuki. Daiki Suzuki has high intelligence and his memory ability is amazing.

Donoue General Hospital runs into a budget deficit, even though the doctors drive expensive imported cars and live an outlandish lifestyle. Office manager Momoi finds surgeon Kosuke Sagara through a medical website. Kosuke Sagara arrives at the hospital and tells the director of the general hospital to decide on his pay after watching his work. Kosuke Sagara informs the hospital that he had previously quit his job at a university hospital and taken a year sabbatical.

Satoshi Itomura is an assistant police investigator who belongs to the Metropolitan Police Department’s Scientific Investigation Team. Reenactments, fingerprint and voice data collections, profiling... His team collects scientific evidence and pieces together fragments of information in order to help build evidences. However, Itomura often does not care about the scientific approach and instead pays a great deal of attention to the things that the victims always carried with them or treasured. And he focuses on these things because they usually carry the victim’s dying wishes, understanding that last message not only helps solve the cases but also brings closure to the depressed family of victims.

Detective Ukyo Sugishita confronts crime on the basis of his own convictions. He has a partner that works for him in the Special Task Unit. For the first 7 seasons, Ukyo’s first partner is Kaoru Kameyama. He is a good-natured, hot-tempered, straightforward and somewhat scattered detective. Beginning in Season 8, Takeru Kanbe replaces Kameyama. Contrary to his predecessor, Takeru is a lanky, cool, conceited and confident detective. From Season 11 to Season 13, Ukyo’s partner is a young detective Toru Kai. Toru is a son of Deputy Director-General of The National Police Agency. But he became a detective by his own effort. And starting with Season 14, Ukyo’s current partner is Wataru Kaburagi, an elite bureaucrat who came to the Metropolitan Police Department on temporary assignment. As the first partner without any career of a police officer, he will face challenging cases together with Ukyo.

The evil empire, Shadow Line appeared to cover the world in darkness. Five childhood friends who have great imaginations were selected as the ToQgers to fight the Shadow Line.

Nezu no Hamakichi used to be a renowned detective. He had lost his job and been banished from Edo after he was arrested for some reasons. Back in Edo for the first time in 5 years, he has just sold toys. This is a story that Hamakichi resolves difficult incidents.