If you loved Zatoichi and the Chest of Gold, try Shinobi No Mono 5: Return of Mist Saizo
A bridge between a film you've already seen and one most people haven't. Shinobi No Mono 5: Return of Mist Saizo has roughly 3.4× fewer votes than Zatoichi and the Chest of Gold — 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.

Zatoichi and the Chest of Gold

Shinobi No Mono 5: Return of Mist Saizo
What they share
Both films are directed by Kazuo Ikehiro, and they both carry the outsider mood tag, and they sit in Action / Adventure / Drama territory. If that's the register that drew you to Zatoichi and the Chest of Gold, the second film will land in a comparable space — through a different lens.
What Shinobi No Mono 5: Return of Mist Saizo is
You haunt the shadows, sworn to avenge your fallen lord. But the Tokugawa Shogunate hunts you, its power absolute. Saizo's skill, honed over years, faces its greatest test. Ikehiro's stark compositions mirror Saizo's isolation. The film lingers on duty's cost.