Hi Patrick
I can't choose to evolve my shiny Pikachu into shiny Raichu (Alolan), I can only choose to evolve it into shiny Raichu. Why is that? I want to evolve it into shiny Raichu (Alolan), hope you can help.
I believe you need to either get to Alola in Sidequests or complete the Alola Sidequests to be able to find any Alolan forms in the wild, and to evolve your Pokémon into Alolan forms.