Pokémon Season 20 Episode 26

So Long, Sophocles!

Sophocles and his family may be moving away, so Sophocles will have to leave the Pokémon school and all his friends. Even though he tries to keep the news from his classmates, they can see that both he and Togedemaru are very upset. Ash and his friends work together to cheer up Sophocles with a farewell party. However, when Sophocles finds out he's made a mistake, he finds it very hard to tell his friends.