If you loved Ken, try Lone Wolf and Cub: Sword of Vengeance
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 Kenji Misumi, and they both carry the foreign gem mood tag, and they sit in Drama territory. If that's the register that drew you to Ken, the second film will land in a comparable space — through a different lens.
foreign gem
What Lone Wolf and Cub: Sword of Vengeance is
Road to Edo. Winter wind. A gate creaks. Disgraced, a samurai wanders the countryside as an assassin, pushing a perambulator holding his toddler and a cache of deadly weapons. The shogun's forces hunt them. Violent, beautiful, and strange, this is among the most influential samurai films ever.

