If you loved Fist of the North Star: The Legend of Yuria, try Riki-Oh 2: Child of Destruction
A bridge between a film you've already seen and one most people haven't. Riki-Oh 2: Child of Destruction has roughly 3.4× fewer votes than Fist of the North Star: The Legend of Yuria — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.

Fist of the North Star: The Legend of Yuria

Riki-Oh 2: Child of Destruction
What they share
Theyboth carry the raw mood tag, and they sit in Action / Animation / Drama territory. If that's the register that drew you to Fist of the North Star: The Legend of Yuria, the second film will land in a comparable space — through a different lens.
What Riki-Oh 2: Child of Destruction is
You arrive in Misaki, a town run by zealots and reactors. You're forced into brutal arena fights, and then you find your estranged brother. But he has powers now, and a new name: Savior. Dezaki’s live-action counterpart pushed the manga’s gore further, though this one is more sentimental.