A Fish Named Hero/ Dobutsu-Sama

S1 E102: Hiro gets stuck as a koi fish and is scooped up by Shoko when saving some captured fish. Will they save him before Shoko realizes that the pretty fish is her sworn enemy? A mythical spirit returns to Earth as an animal. Ashida hopes to turn it into a powerful samurai. The Mini Ninjas must find it before Shoko does. But, what animal has it turned into this time?