Ep. 1: Pikachu's Pichu Past and Evolution Journey Revealed in Prequel

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This prequel episode details Pikachu's origins as a Pichu, including his fall from a cliff and subsequent care by a Kangaskhan. It covers the events that led to his evolution into a Pikachu and his eventual meeting with Ash. The narrative also features Hana Takeda voicing young Ash Ketchum, Kei Shindou as Goh, and Ikue Ootani providing the voice for Pichu. In the English dub, these characters are performed by the same actors who voice their older counterparts, utilizing technical adjustments to match their younger appearances.