Naoto Takayama is an ordinary high school student who aspires to a comfortable life working on the Japanese National Railways.

He ends up working as a security force trainee, where he unwillingly has to deal with his strange colleagues as well as RJ, a group of extremists who are fighting to privatize the railway.

It takes place at the same time as the main series and is located on the Sagami Bay coast of Izu at Atami.

[3] The second side story was published in July 2022 and has to do with an AI discovered on a laptop in the Tokyo station lost and found.

-日本國有鉄道公安隊- The Revolver) and illustrated by Keiji Asakawa, began serialization in Mag Garden's Blade Online magazine on 2012.

[19] The opening theme is titled "Mukai Kaze ni Utarenagara" (向かい風に打たれながら) and is sung by Minori Chihara.

for being "pure fantasy and not even exciting fantasy" with its alternate version of the Japanese National Railway system, "fanatical infatuation" with Japanese train history and embarrassing fanservice innovation, calling it "a show fueled by uninteresting trivia, buffeted by desperate attempts at sex appeal and action-movie excitement on a shoe-string budget.

"[26] By the series' end, he concluded that: "If you're a train and fanservice aficionado and have missed the ride so far, you might as well check it out now before it's completely (and deservedly) forgotten by the world.