Review as of v0.21
Pros:
+ Good looking characters
+ Nice animations
+ Decent mechanics
Cons:
- The story and writing leave a lot to be desired
In-depth:
I will admit, I expected way less from this game. And sure, it's not some outstanding innovating masterpiece, especially when it comes to story and writing (both are... well... what you'd expect from your average eroge. Plus some spelling errors, but who cares?).
However, when it comes to actual content, it's much more enjoyable than I thought it would be.
The characters look nice, the animations are, for the most part, pretty good (the loops could be smoother, but it's a minor complain all things considered).
There are some variations in routes and dialogues. Although most aren't implemented yet and some events are, unfortunately, reused no matter what route you pick. But still, there's potential there.
And for this early of a version, there's actually not that little content. I think it took me about 3 hours to unlock everything, so that's very decent. Hell, some finished games have less.
The sound design, for once, is also not too bad. Sure, it's just Koikatsu sounds, but it IS professional voice moan acting, so it's better than some random royalty free bs many developers insert into their games.
I also really appreciate the reset button that allows you to start one girls route from scratch without affecting other girls. That's brilliant. More games should have this.
So, overall, yeah, I was pleasantly surprised. Looking forward to seeing this game finished and polished. If all you want is a really good extended Koikatsu scene and don't look for some outstanding storytelling, it's an easy recommendation.