This movie exists in the alternate "I Choose You!" timeline, separate from the Sun & Moon or Journeys TV series.
If you are looking for a specific or want to know if it is currently free on a certain platform, I can look that up for you! Provide a summary of the post-credits scene ? Compare this movie to the previous film, I Choose You! ? Watch Pokemon Movie 21: Minna no Monogatari Epi...
The movie features a soft, vibrant aesthetic produced by WIT Studio (known for Attack on Titan ), giving it a distinct look from the main anime series. This movie exists in the alternate "I Choose You