While I think that the art is nice, the girls are mostly cute, the story seems to be more a rush to the end rather than a story with options based on choices.
Besides the BJ scene I really don't see impact in the story by the choices, you seem to end in the same scenes anyway, even if the characters supposedly hater you or not the outcome seems to be exactly the same, the story feels too railroaded, the character seems to focus too much on a character and ignore the rest of them, while I would rather have your choices allow you to focus on other charterers that might have be more interesting for different players.
Beside that the story hard to believe in some parts IMHO, your little sister hates you for a forced BJ, but still asks you to take her to the pool, she goes with you to shop things and asks you to get her clothes ?
I don't really see any consequences of your acts.
Another one for example is that the goth girl, she's supposed to be a very good chemist but still has to sell her drugs on her own, and has a boss/organization who wouldn't let her leave the job?
what kind of organization boss allows his prized drug make go and sell her drugs on her own, and risk being caught?
not to mention he would most likely make sure she doesn't has any monetary issues that might have her run away.
I think the game has a lot of potential, and I do like the drawings of the characters, it's just that the story really needs to be reworked in my opinion.