Pokémon is always my life since I was a child at my earliest of years after I was born (1997, January 9).
Starting from Season 1, the very start of Ash Ketchum started on his journey, with his partner Pokémon - and long-time friend - Pikachu, to become the world's greatest Pokémon Master. Now we, as Pokémon fans (from the old generation to the new), saw Ash and Pikachu witnessing Ho-Oh - the Rainbow bird Pokémon - flew above past Ash since Season 1 Episode 1. For the movie itself, Pokémon the Movie: I Choose You! (2017), aka the 21st Pokémon movie, this time, Ash and Pikachu are following Ho-Oh after they received a Rainbow Wing.
I enjoyed this very much, no matter what the differences it makes from the other 20 Pokémon movies.