Synopsis: François, in an era where ether and steam flourished, and mystery was buried by the dust of history, a boy who skipped his coming-of-age ceremony ventured into a mysterious world. With the thought that he would do whatever he wanted, at least for this one night, he drew a sword. His repressed desires awakened a mysterious power, and after the beautiful silver moon rose, he transformed into her. "Don't worry, we at the Möbius Organization are professional containment research and countermeasures organizations. We'll find a way to turn you back into a boy!" "But I don't want to go back." "???" Beneath gears, guns, analyzers, and ether furnaces, the Möbius Organization, mysterious containment objects, a longsword from ancient times that grants wishes… Welcome, the defiant one destined for greatness. Another world hidden beneath the night awaits your arrival.