THE ALIENS HAVE INVADED THE EARTH AND THE HUMAN RACE IS CRITICAL! When the aliens named Fusion invaded Japan, the samurai fell and swords were confiscated. But for the wavy haired, laid back samurai in the room "Mayo Yamazaki," it's just another day in the hard knock life as he and his friends take on odd jobs to find clues on how to dispelled the Fusion. But there's more than meets the eye, something bigger and darker awaits on the horizon.