I think the game starts good, but quality deteriorates the more you play it. Too many game over screens instead of lewd endings. Endings are short. Some characters don't or barely have any lewd scenes, while I would expect a lot more from them.
The good: story, environments, characters, animation quality, lewd scenes, outfits (I LOVE it when you can equip characters with increasingly sexy outfits). A plot twist in the story had me thinking about it a lot, that's a very good thing IMO.
Anyway, so far for my two cents (without spoilers). I do feel like the creators stopped spending more effort into this game so they can move on to the sequel. My expectations are high
EDIT: I am still thinking about the story and the characters, hours after deleting the game. I just want to emphasize that I greatly enjoy the world and the characters, especially the way in which they interact. I crave more