You can enter these at the in-game to receive Gem Apples and Fragments : SUPERKIRBYCLASH : 10 Gem Apples, 50 of each Fragment. GEMAPPLES : 10 Gem Apples. THANKYOU : 10 Gem Apples (Check for seasonal availability).
For those using digital backups or managing their own library via custom firmware (CFW), this update is delivered as a standard (approx. 350 MB). It requires Base Game Version 1.0.0 to be installed first. Super Kirby Clash Switch NSP UPDATE