Hyakkimaru travels a demon-infested Sengoku Japan to reclaim his stolen body parts from the 48 demons who took them. He is accompanied by a young thief named Dororo on his bloody quest.
Why it's similar: Both series feature a physically cursed protagonist and a young companion traveling through a violent era of Japanese history. The dynamic between the weary protector and the vulnerable yet resilient orphan mirrors the Manji-Rin relationship perfectly.
Power comparison: Similar to Manji's regeneration, Hyakkimaru uses prosthetic weapons and supernatural senses to survive lethal encounters against demonic foes.
Why watch after Blade Of The Immortal: Watch this if you want the closest possible emotional match to Manji and Rin's journey through a monster-ridden historical setting.