Kamui Gaiden (カムイ外伝) is a 2009 Japanese film directed by Yōichi Sai, based on Sanpei Shirato's manga series of the same title.

His travels bring him to a seashore village where he meets Hanbei, a fisherman who shares the former ninja's sense of honor.

Rob Nelson of Variety wrote that "this would-be epic needs more show and less tell" as it "comes to a crawl too often over its two-hour running time," but applauded Matsuyama as "perfect as the brooding title character.

[16] Kurt Halfyard of Twitch Film wrote that "function and value of art is a pretty high minded premise for a simple, populist action-melodrama" and "the collection of underwater, tree-top and sea-side ninja battles are not enough to enliven the whole turgid affair," adding that "Shinobi offers a more compelling scenario and characters and that is not saying much.

"[18] Cinema Verdict reviewer rated it 5/10, also finding Kamui to be a disappointment, "built upon a story and characters who didn’t capture my attention with its overall fake look.