If you loved Battle Royale High School, try Violence Jack: Evil Town
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 Ichiro Itano, and they sit in Animation / Fantasy / Horror territory. If that's the register that drew you to Battle Royale High School, the second film will land in a comparable space — through a different lens.
What Violence Jack: Evil Town is
The ruins hum under cracked neon. A lone figure carries a sledgehammer through corridors where three gangs hoard water like gold. When the fuse burns short the wrong way, the city learns why they call him Jack. A hyper-violent YA dystopia where everyone fights for the bottom step.

