Not to get anyone's hopes too high, but there's a possibility something like that could happen now that the new film is a hit. You may have missed it, but Detective Pikachu has a very subtle reference to past stories that very well could tie the movie into the anime world of Pokemon and the franchise's most famous human character. To spell it all out, below you'll find the details behind the reference that some may have missed, and an exploration into how it may set the stage for a popular figure who didn't appear in the film: Ash Ketchum.