When Roronoa Zoro, the demon-eyed swordsman from the pirate seas, is hurled into Gear Kyoto – a steampunk metropolis where katana-wielding cyborgs duel beneath floating clockwork islands – he finds himself bound by more than dimensional chaos. His cursed blade Kitetsu pulses with alien machinery, his blood morphing into living metal. Here, he crosses paths with Kenshin Himura, the pacifist assassin whose reverse-bladed sword hides a steam-powered secret. Together, they uncover a plot bleeding across realities:
The Mechanical Shogunate harvests warriors’ souls to fuel the World Calibrator, a machine bridging parallel worlds. Now, sword-corpse puppets – fallen fighters reborn as blade-studded horrors – stalk the gear-strung skies. To survive, Zoro must master his mutating Metal Bloodline before it consumes him, while Kenshin battles shadows of his lethal past. Their clash of ideals becomes their greatest weapon as they: