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The B-Button League is a location in the Pokémon the Series: Diamond and Pearl episode "Ya See We Want an Evolution!".
Description[]
The B-Button League, run by Oralie and Haley in Jubilife City, specializes in raising strong Pokémon without evolving them. The location is named after how the B button is used to cancel the evolutionary process of a Pokémon in the core series.
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