I've read this up to Chapter 21. I'm not quite sure why I did. Perhaps I was hoping for the female character to develop some self-confidence sigh...
SnEptUne is pretty much right on and I'll build up on it a little bit more.
Karin is this girl who is the shy and quiet type who doesn't like to stand out, thus her lack of interest in makeup and fashion ("stuff that girls are supposed to like"....ok whatever). This hot and popular yet very nice guy gets interested in her and they eventually get together despite "obstacles", which include mean parents who only cares for Karin's studies and an evil *cough* best friend*cough.* After that, she had to deal with her boyfriend's brother's girlfriend and this strange development where her boyfriend is some heir to some huge company. For the most of the time, Karin frets a lot over what ppl think of her and doesn't seem to be able to deal with tough situations well, apart from cry and be miserable.
I don't mind the predictable storyplot as it's shoujo manga. However, I pretty much lost interest after "I love you, can I sleep with you?" and the fact that Karin has not changed in her insecurity and lack of self confidence after 20+ chapters. Oh yeah, it doesn't help that Karin does not have any good friends except for one girl who has an affair with a married man and gets pregnant.
This is currently No. 1 in Psycho Ann and Mave's list of annoying shoujo manga along with Hot Gimmick, PeachGirl and maybe, Parfait Tic (OK, I still like PT a lot - DaiyaxFuuko shipper!).