Tak Sakaguchi

In this world, there exist demon swords. Those who have the sword will have their will taken over, and they will lust for human blood and keep on killing indiscriminately. The sealer is who searches for those blades that haunt people and seal them with his scabbard.

Kyosuke Fushimi is a former detective from e Kanagawa Prefectural Police Department's Homicide Division who currently works as a special agent of KSBC (Kanagawa Prefectural Police Department Investigation Analysis Center). He uses his genius brain and knowledge of past crimes to solve difficult cases. He also make use KSBC's latest investigation ability to find the serial killer who murdered his lover.

Shishido Joichiro, a 19-year-old man whose frank honesty has cost him 26 part time jobs. One night, he runs into a group of muscular bodyguards who protect the streets at night, members of a private security firm known as "Tokyo Fist," which ends up changing his life.

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.