Steel Edge: Armor of Echoes

In the rusted slums of Sky Dome City, mechanic Chen Yan fights to protect orphan Xiao Shi Tou from an Order Bureau mech siege. On the brink of death, he falls into an underground ruin and accidentally activates the ancient killing weapon Steel Edge. Though powerful, this force voraciously consumes his life. Forced to survive amidst relentless pursuit and backlash, Chen Yan learns the secrets of the Boundary Armor from black market dealer Old Cat, attracting the personal hunt of ace hunter Rex, the Gray Knight. Ultimately, Chen Yan tames Steel Edge within the furnace of will, shatters the Barrier with a single punch at an abandoned station, and tears open a crack in this iron cage.