I admit that I was a touch skeptical about this game (despite, for the first time ever, the fact that I was actually recommended to play it). However, I am very happy to have been completely wrong in my initial skepticism. This game's handling of some extremely overdone VN tropes (namely harems and human x monster girls), is truly unique, and I wholly recommend it for that alone.
That said, I do have some fairly minor criticisms. Firstly, the writing (especially early on) is quite... wonky. One of the things you might notice is a weirdness about contractions. There are often times when things which should or could be contracted to make a sentence flow better, are not. Outside of a character for whom this is an established character trait, it can occasionally render the dialogue in important scenes much less effective than otherwise. That's not to say that contractions aren't used, they're just used inconsistently. I'm not sure if I just got used to it, or if it really did get better later on, but regardless, it makes the tone of some of the writing seem much more robotic than is (probably, I assume? I supposed I don't know exactly what Vertigo is going for) intended.
Also, the ending (of the demo): I get it. You want to release as much content as possible, with as little time between releases as possible. People are impatient as fuck, yeah. But the abrupt-ass cliffhanger is maaaaybe not the way to go about it. Like I could understand if it came at the end of a scene, but the one for update 36 just... happens. In the middle of a conversation. There's plenty of content before the ending, so, you have a lot to tide you over until the 22nd, but it's still annoying and feels extremely awkward (not to mention maybe a bit unplanned).
But please keep in mind: Those are fairly minor issues. As far as I'm concerned, there's way, way more good to write about than bad. I just don't want to spoil anything (also it's hard to be specific). All I will say is that I really like the scene/part where the character Miko is introduced (it's very early on). Can't quite say why exactly, I guess it's just very sweet and I'm a sucker for that. Uhh anyway play the game it's great.