This one was fun! I came into it knowing nothing, so part of me was always on edge expecting for it to somehow turn into a horror story - which made even the more casual scenes feel somewhat anxiety-inducing. In a way, though, this worked well - Fede's uncertainty about coming out to Anna mirroring the reader's uncertainty of waiting for the other shoe to drop, so to speak.
Speaking of which, I think the writing of the characters' and their dialogue is fantastic here - there's a lot of layers to their various interactions, each of them arriving to the villa with a different wish in mind - and though the story doesn't spell it out explicitly, I felt as though I could still put together a solid picture of everyone's motivations and differing perspectives. The one point of contention for me was is the coming out scene - where the transition from a somewhat calm chat to a full-on argument felt a bit too sudden, in my eyes.
I think this might be a side effect of the characters' expressions and feelings being somewhat hard to track - the narration doesn't call it out, and while Sikyu's sprites are gorgeous (and Raimondo's especially are very expressive), Anna doesn't have a lot of variety in her expressions. Both of these can very well be intentional artistic choices, but it feels as though it somewhat diminishes the effect of the scene - Fede is obviously terrified of doing this, but we don't really feel this in the pacing, or even in the specifics of the dialogue - it didn't feel all that different from any other conversation in the story to me, in spite of its importance to the character.
Presentation-wise, I think the VN was somewhat lacking in sound effects and music - the vast majority of the story takes place in absolute silence, and while that can be a good way to get across the setting or to make specific moments stand out more, it comes off more as the project being unfinished here. That said, something which worked really well in terms of presentation was the positioning of the sprites - it's something that's rare to see in VNs, but when it's done well (and here it's done very well), it really elevates the experience - the sprites really do feel as though they're positioned in a physical space, rather than just being overlays on top of a background image.
At the end of the day though, the sticking points I raised don't do much to diminish this otherwise very solid story - and that's without getting into Sikyu's incredible art and CGs, which are the cherry on top of it all. Fantastic job!