The demo situation for Atelier Lulua: The Scion of Arland in Japan has been a bit wonky. There was supposed to be a demo distributed via code in a gaming magazine, but the demo ended up going live for all on the Switch eShop early. That demo was then yanked, and the code distribution took place shortly thereafter. Now that same demo has once again gone live for all players. I guess the situation ended well, at least!
Welcome back, Lulua