This was a delight! I’ve been keeping an eye on this one for a while, and the final game did not disappoint. The entire thing is beautifully composed, with gorgeous character and background artwork - I really liked the slight fish-eyed(?) perspective on the backgrounds, it gave the entire game a somewhat spooky atmosphere! The prose was very well-written (the playful banter was especially fun!). The characters are all wonderfully colorful (and I particularly liked how none of the characters were portrayed as purely morally black or white). Most of all I was impressed by how well-thought out the story was - the worldbuilding was impressively complex, the characters all grew over the course of the story in their own ways, and the endings were satisfying and really felt like a cohesive experience narratively.
Spoilers
I really liked how, in the "liberation" ending, Lucy frees Edelweiss not only from himself, but also from her diviner responsibilities - it's a very fitting turnabout on their initial encounter (threatening Emrys to get Edelweiss to sign a contract vs. rescuing Emrys and liberating Edelweiss). While it's not a traditionally "good" ending (for a romance game), I thought that it was a very fitting good ending considering where their relationship started and Lucy's overall personality, and the ending scene was very sweet. It also contrasted extremely well with the "possession" ending (either letting Edelweiss go or possessing her completely) - a perfect set of endings for a "yandere" character.Ilya was a very interesting secondary male lead! At first glance, he appears to be the “good guy” (he even has the princely, pure-coded appearance to go along with it) - but ironically, his ending involves “controlling” Edelweiss in a fashion as well, by presenting her as a maiden that he needs to rescue and imposing his solution, without giving Edelweiss much say in the matter. Interestingly, in that way, his relationship with Edelweiss lacked some of the nuance that Lucy’s relationship with her had, and despite his ending being the most “traditionally happy,” it definitely felt a bit more off-putting/uneasy than the liberation ending.
(The TBHK comparisons that other commenters have made were very apt - I definitely got those vibes! It also reminded me a lot of classical shoujo that I used to love, like Inuyasha.)
Overall I enjoyed this so much!! Beautiful work, nef! (It was so fun playing another one of your games!)