This is a wonderful game!
You just can't go wrong with a picross/nonagon adventure, and the theme is super cute.
No sound on this PC, but my brain supplied music from Daedalian Opus while I was playing.
And I found on the PC I kept over-scrolling. I'd recommend either implementing 'Frogger' controls (where you have to tap tap tap to move) and/or have fill / X not overwrite existing fill / X spaces (meaning you'd have to clear them first.