Ohh this is very much my jam! I love the idea of ex-magical girls and yuri, so no wonder I loved this demo so much lol. And this is made by a single person? That's even more amazing. The art and the writing are both great so far, and the presentation and mystery is very well established at the beginning. I'm curious about Lilia's past, and about Rosie's present. I was left wishing there was more to play, so I'll definitely follow you!
I also liked the achievements, I thought they were a nice addition.
Good job on this one!