Naruto Shippūden S11 • Paradise on the Ship Episode 241 Kakashi, My Eternal Rival! ( Air Date 2011-12-22 ) Genre Animation, Action & Adventure, Sci-Fi & Fantasy category. Overview "As the Leaf ninja’s ship heads toward their final stop for supplies before entering the Land of Lightning, Yamato warns the crew to stay alert for enemies who could mimic both the appearance and chakra of their closest allies.".