It's fairly good for what it is and that's mostly because the overall story/plot is fairly entertaining, especially if you're into this kind of "stuff". Also helps that... I've forgot her name, the lovely lady is quite nice looking.
However let's put it into perspective, this has been in development for ~4-5 years. I assume the developer had a patreon or similar. In 4-5 years you'd expect a lot more than this. Actual full sized *games* are being developed by single developers every year, with no patreon or support, it's like their passion projects, then some of them really pop off on steam.
For some reason when it comes to these VN's it's like people have really low expectations and that I do not understand. I've said this before; the second someone starts charging for their work, even if it's a single patreon, they have a right to have *expectations* and do not deserve abandoned projects. It's just too common with VN's in general, it's a massive graveyard of VN's that had "potential".