I like to keep 1 of each sticker. In October 2023 they had the Detective Pikachu 2 event. This featured pikachu riding a growlithe like the picture. Where would this be in the sticker book? I cannot find it. So it is possible I may have sent away my last one.
Edit: it seems it is im different places for different people. Very twisty…
by Froggo14