If you loved Riki-Oh 2: Child of Destruction, try Riki-Oh: The Wall of Hell
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Satoshi Dezaki, and they both carry the body horror, raw, unhinged mood tags, and they sit in Action / Animation / Drama / Fantasy territory. If that's the register that drew you to Riki-Oh 2: Child of Destruction, the second film will land in a comparable space — through a different lens.
body horrorrawunhinged
What Riki-Oh: The Wall of Hell is
You arrive at a corporate prison in a ruined 1990s Tokyo. You're Riki-Oh, and your super-powered fists landed you here. But the prison is run by something worse than the guards: four inmate overlords. The animation's extreme gore broke taboos, earning it a cult following.

