Pokémon
Sticking With Who You Know! (12x44)
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On the way to Sunyshore City, Ash and friends stop in a forest. Things start to get chaotic, however, as Pikachu gets upset with Piplup in a debate over which of them Ash likes best. However, a mysterious wave all of a sudden makes the two Pokémon inseparable, so Ash and the others must solve the problem.