The Shining Fates Mad Party Pin Collection promo's will release in Japan too.
As part of their "Let's have fun. Spring, Pokemon Card Game." campaign:
You can obtain 1 set of 4 promo Mad Party cards featuring Polteageist (190/S-P), Galarian Mr. Rime (191/S-P), Dedenne (192/S-P) and Bunnelby (193/S-P) to those who buy 1 booster box (or 30 packs) in participating Pokémon Card Gym stores.
You can also get this special sticker for free to everyone that shows up to the store.
Starts from March 13, 2021. While supplies last. 1 promo set per person. Both the sticker and promo cards are limited. Starts from March 13, 2021.