I'm only on the third chapter, but it's interesting. I'm not that fond of romance stories, but I'll stick with this one. Good job, sir.
Glycerin will probably be my favorite of the girls. Blar has some nice style.
This story is written pretty well. There are a lot of unnecessary ellipses though. You probably wrote it like that to show the reader a pause where you put the ellipses, but a comma or a period would serve to provide that pause. There are also a few typos (such as "O" for "Oh" and "there" for "here"). Sorry! I'm not trying to nit-pick your work or anything, but if I were you, I'd want to know. Well, like I said, it's still written pretty well.
About how many volumes are you planning on writing?
I'm curious to know how you imagine your characters as you're writing. Do you imagine them in an anime style or a realistic one?