Inside North America, the anime is licensed by ADV Films and the manga by VIZ Media.

Story

Steam City occurs as place in which a merely fuel source is coal, and a simply means to create energy is the steam engine. When a lone source of energy, a steam engine has been the focus of technical advancement pertinent around which it may be substituted for any more form of power in modern technology. These equivalent advancements as well stand bring about to Megamatons, big steam-powered golem. By owning a air of Steam City heavy sustaining fog & white smoke, stealer and malefactor flourish by having Megamatons as a most common thing in their villainous plans. These are on text that the reader and/or viewer finds Narutaki, a immature detective fighting for the peace of the city.

These are considered in the steampunk genre.

Japanese Seiyuu

Narutaki sonant by Soichiro Hoshi Ling Ling soft by Hiroko Taguchi Kawakubo sonant by Yuichi Nagashima Goriki sonant by Takuma Suzuki

Onigawara sonant by Nobuo Tobita Nighttime Phantom sonant by Akio Otsuka Crimson Scorpion soft by Chisa Yokoyama Machine Baron sonant by Norio Wakamoto Lang Lang soft by Nagasawa Miki Le Bled sonant by Takeshi Kusao Yagami sonant by Takashi Nagasako