He traveled through a game world set in a magical remake of World War I, becoming a hapless imprisoned man in London. Luckily, he knew the plot well and possessed a cheat code that allowed him to replicate other people's abilities. Since fate had already condemned him to a life sentence, he decided to set the mountain on fire. "Miss Witch, how can you govern a country with these insects?" "Madam, you don't want your general husband to discover you're a spy for the Six Nations, do you?" "Go ahead, Princess, what are you hesitating about? Failure is treason, success is revolution!" "You ask what's on board? Nothing, just a few thousand guns... Arms smuggling? Don't slander me! I'm clearly supporting a just cause!" ... and so on. By establishing a secret organization, operating an underground industry, weaving a spy network, and collecting hardcore...

This is an era of infinite possibilities, steam and steel, gears and clockwork. Steam power and differential engines symbolize the infinite future of human civilization. However, no one noticed that under the haze of steam and in the shadow of steel, the dark, mysterious mystery has never left. And a traveler from a foreign land will unveil the mysterious veil in this turbulent, free and dreamy world, and write his own history and legend