Pokemon Sword/Shield special promotion in Japan giving codes for Genesect, Volcanion, Marshadow, Master Balls and more

It seems that Pokemon Sword/Shield players in Japan will have a chance to unlock exclusive in-game rewards due to a promotion starting November 20, 2020. According to Serebii, when Japanese players purchase certain Pokemon merchandise (including cards) after this start date, they will receive a code for one of many in-game Pokemon/Poke balls. 

The prizes include: Genesect, 20 Cyrite Ore, Fast Ball, Level Ball, Love Ball, Volcanion, Moon Ball, Heavy Ball, Friend Ball, Lure Ball, Marshadow, Safari Ball, Sport Ball and Master Ball. It’s unclear how long this promotion will last, but hopefully many players will be able to grab these items and Pokemon before they are gone.

Source