In the page for the Pokémon arcade game, Pokémon Ga-Olé, in this month's issue of CoroCo, it confirms that there will be a special disc for the "I Choose You" Cap Pikachu, a Pikachu wearing the cap that Ash wears in the new movie. However, it notes that you can scan this QR Code into Pokémon Ultra Sun & Ultra Moon to get the Pikachu with this cap in the game.
This variant of Pikachu is not currently available in Pokémon Sun & Moon, with only the ones in the anime series being distributed currently in Japan and elsewhere later this year. This promotional Ga-Olé disc is obtained when you go to see the movie and works in a similar manner to the distribution of Magearna in Japan last year.
This variant of Pikachu is not currently available in Pokémon Sun & Moon, with only the ones in the anime series being distributed currently in Japan and elsewhere later this year. This promotional Ga-Olé disc is obtained when you go to see the movie and works in a similar manner to the distribution of Magearna in Japan last year.