So it tries to be funny and dramatic at once. I think it does not achieve it's goal, but of course you might feel different. It's a shame, because there are quite a few good scenes in here. But it drifts into melodrama at times, when it is completely unnecessary. Not to mention that the acting (even for that sort of a movie) is bland, if you are being nice to the movie.
Then again, since this is based on a Manga, it is always difficult to put the complexity of those onto one film. Unfortunately I have not read any of those "comic books" (hope you are not offended by me calling them that, but not everyone might know what a Manga is). Still I'm sure they are far better than this one, that can be enjoyed at times ... especially with low expectations