Izumi Outlet Holiday Decorations, featuring Mario?

What exactly is going on at the outlet mall in Izumi?

When we stopped by for dinner in the middle of December, we were surprised to see that the normally expected holiday light decorations were interspersed with 2-dimensional cut out decorations in a Mario theme.

When I scanned the QR code, it took me to a kind of scavenger hunt which would have been fun if we had had more time. In the end, it looks like finding all of the QR codes in the various Mario decorations would unlock a downloadable screen background or something like that.

Still, something fun and a little weird, but I don't know why it needed to be in the middle of the holiday decorations.