It's alright. The artstyle could use some more details, but the girls are nice-looking. I find some ideas like Jun's content to be pretty funny, but overall, the adult content is severely lacking. I get it's a very early demo of what's to be done, but so far, completing the game is very quick and the reward for doing so isn't very arousing; just some very basic masturbation and groping scenes for the most part.
It's not terrible at all, but I still wonder if what's next would be worth pledging money, if the adult content is going to be as tame as what's already there. I think for the next versions, the dev should focus on the meat of what he wants to implement in order for us to be fixed on what he intends for his game. As it is, it's alright, but nothing you haven't seen anywhere else.