Japan, year 20XX. The evil secret society Jakou has been attacking the country systematically, prompting the founding of several private defense corporations to operate alongside the police and self-defense forces. Both sides have adopted experimental mechs, and the resulting battles have caused damage to cities and infrastructure that the government can barely measure. Haruka witnessed the destruction of her hometown when she was young. She has spent the years since waiting for the chance to do something about it. That chance is Toyokumo — the public defense corp, and their newly designed machines. A mech action game about the kind of revenge that takes years to become possible.