There is a short yet somewhat secret cutscene in the Epilogue for Pokémon Scarlet and Violet. The Epilogue, which is known as Mochi Mayhem, is an extra piece of content that allows players who have finished the Indigo Disk DLC to play through a special quest. The mission connects the story told in the Gen 10 games to the two expansions in The Hidden Treasure Of Area Zero. It takes players back to the land of Kitakami with their friends from Paldea. However, upon arrival, they notice there is something strange with Carmine.

https://screenrant.com/pokemon-scarlet-violet-epilogue-secret-cutscene-ogerpon/