Steam Detectives

Twenty years into the future, a city now called "Tokyo" has developed into one of the few world-class high-tech centers, "Tokyo City". The main character, Ken Kanzaki, is a young investigator assigned to the criminal investigation section of the Metropolital Police. He is one of the finest sharp shooters in the Police.One day, Ken is ordered to provide security for a party held by for "Zaizen Konzern", a world-class plutocracy. All of a sudden, spector robots appear and distrupt the party. Zaizen, a commander-in-chief, is killed and both Ken and Jun. Zaizen's son,are fatally injured by the robots. Two of the party's guests, an auto-racer, Ryo Aguri,and a wresler, Go Goda, also receive serious injuries. Three severely injured young men are operated upon by scientists from the Metropolitan Police. Several days later, a robot corp led by a mysterious organization called "Ido" appears in the floating-town of the Tokyo Bay. But the Police and the Army have no effective strategies to contain them. At that moment, three young men attired in mechanical suits enter. They are the very three young men, Ken, Ryo and Go, who have been turned into the cyborg investigators through the operation. They call themselves "Armored Police Metal Jacks". "Metal Jacks", dazzlingly switching from "Jack Suits" to "Jack Armors", completely demolish the robot corp and achieve victory, thus signals the beginning of the battle between the high-tech criminals and "Metal Jacks"with a futuristic "Tokyo City" in the background.

Nagumo Keiichirou was a genius high-school detective. No case was complex enough for him. But what happens to genius detectives when they get older? Now 35, with bad hips, running a failing detective agency with no cases to solve and struggling to pay the rent, he's at a dead end. In comes a high school girl in his office who says she wants to work with him. With her help, will the out-of-touch, old-fashioned Nagumo get back the fire of his youth?

A group of young boys (plus a token girl and her little brother, the obligatory brat) form a detective club, pooling their talents for brain, brawn, invention, and driving skills to solve crimes in Tokyo. Much to the consternation of police chief Nakamura, they often succeed where the professionals fail.

Nouvelle Tokio City locates on the place where it used to be Tokyo Bay. At the first glance, the prosperous city seems to enjoy its freedom and peace, but the city is suffering from the crimes. Senmuji Maito is a perfect 15-year-old boy, bright, handsome, smart, and all-around sportsman. Furthermore, he is the leader of Senpuji Trading group, and a multimillionaire. He spends his private fortune to found "Brave Express Squad" which consists of several robots. They are the robots that have various special abilities. Above all, the leader, Gaine, has a super artificial intelligence and has own personality. They can transform into trains. In case of incidents, they will appear anywhere in the world using the highly developed railway system.