I loved this manga. To be honest, I was a bit put off by the premise, since it sounded like it would become a stereotypical and boring ecchi title.
I was completely wrong.
The story starts out as a romantic comedy, but transforms into a drama about three volumes in. I tend to take on the emotions of the main characters in things that I read/watch, so I felt extremely depressed, sad, and frustrated for the rest of the series. It had a very serious effect on my emotions, which is a good thing... it was very effective. It is very well written, and, while the main characters' actions can become frustrating, they are all justified. I cannot recommend it highly enough.
Be prepared to have a lighthearted manga on hand for reading once you finish this if you are as susceptible to having your emotions played with as I am. Otherwise, you will feel sad and empty at the end, even though this series does have a happy ending.
In any case, read it. Make your own judgment. And, yes, there are a lot of exposed breast and panty shots in this series. Please, learn to look past them if you are considering skipping this series due to that. You will find something amazing if you do...