Slave Zero X

From atop Megacity S1-9, the Sovereign Khan rules with fists of flesh and iron. Beneath the city's decaying foundations, a vengeful warrior hunts him. 5 years before the events of Slave Zero, Slave Zero X brings new life to a world where horrific living machines known as Slaves are the last remaining instruments of war in humanity's long and bloody history. A secret band of warriors known as the Guardians hope to prevent these biomechs from being unleashed upon the world, but a swordsman among their ranks has a foolhardy idea: use the enemy's weapon against him. Teaming up with a stolen prototype Slave unit, Shou becomes a raging devil hell-bent on slaying the false god.