Pokémon: To Be a Pokémon Master

The Rainbow and the Pokémon Master! (1x11)

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When Ash and Pikachu return to Pallet Town and reunite with Gary, he asks Ash the following question: How much closer are you to becoming a Pokémon Master, now that you're a Champion? Becoming a Pokémon Master has been the dream Ash had been gunning for ever since he first set off on his journey with Pikachu. Will Ash be able to find the answer to this question?