Sasuke does not fight Mifune in any chapter of the Naruto manga. Mifune is a samurai from the Land of Iron and Sasuke fights him in the anime adaptation of Naruto Shippuden, specifically in episode 260.
what chapter would that beb convereted to chapters?
The episode number does not directly correspond to a specific chapter in the manga. However, the events of episode 260 roughly correspond to chapters 480 to 483 of the Naruto manga.
