Pokémon S25E42 - Partners in Time!

Satoshi and Dande have their Daimax Bands recharged by Mugendina, leading to a battle between Kyodaimax Aceburn and Kyodaimax Pikachu, which ends in Pikachu's favor. Pikachu then goes up against Dande's Lizardon and briefly passes out. However, Pikachu becomes motivated after imagining all of Satoshi's Pokémon cheering for him, allowing him to get back up and deliver one last Thunderbolt on Lizardon. Pikachu manages to defeat Lizardon, resulting in Satoshi's victory over Dande. Satoshi becomes the new World Champion.