Riki-Oh: Toukatsu Jigoku

Riki enters a prison where corrupt officials and powerful inmates enforce their own brutal order. His extraordinary strength would make him dangerous enough, but his refusal to submit is what truly threatens those in control.

Standing up for other prisoners makes him a target for the institution's enforcers. As they try to eliminate him, Riki answers coercion with overwhelming resistance, fighting to retain his principles in a place built to strip people of dignity.