If you loved Agitator, try Yakuza Demon
A bridge between a film you've already seen and one most people haven't. Yakuza Demon has roughly 3.5× fewer votes than Agitator — 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.
What they share
Both films are directed by Takashi Miike, and they both carry the raw, unhinged mood tags, and they sit in Action / Crime territory. If that's the register that drew you to Agitator, the second film will land in a comparable space — through a different lens.
What Yakuza Demon is
Rain-slicked streets. A lighter clicks. Two yakuza, bound by loyalty to their aging boss, face impossible odds. One takes drastic action, landing his beloved Oyabun in jail to save his life. Miike's signature blend of violence and pathos finds its target.

