Samurai Champloo is a 2004 Japanese historical adventure anime television series. The debut television production of studio Manglobe, the 26-episode series aired from May 2004 to March 2005. It was first partially broadcast on Fuji TV, then had a complete airing on Fuji Network System. It was licensed for North American broadcast on Adult Swim, and for commercial release first by Geneon Entertainment and later by Crunchyroll. It was also licensed for English releases in the United Kingdom by MVM Films, and in Australia and New Zealand by Madman Entertainment. A manga adaptation was serialized in Monthly Shōnen Ace during 2004, later released in North America by Tokyopop the following year.

In feudal Japan (1185–1868), a rōnin was a samurai who had no lord or master and in some cases, had also severed all links with his family or clan. A samurai becomes a rōnin upon the death of his master, or after the loss of his master's favor or legal privilege.