I didn't hate it but there was a lot left to be desired. The art was about the only redeeming thing in this whole manga. The story (especially the ending), was so contrived, it felt the ending was a part of a whole different manga. The character development was poor and it just was a waste of time.
If you want to read a better quality gender bender about a half guy, half girl (though in a different way), you should read After School Nightmare. It has the sci-fi aspect of this manga; the character development and the mystery is a lot better; and frankly the ending was 20x better than this one.
Edit: I did like how they portrayed the main character in a normal way, in a way where she had problems that were similar (if not the same) to every other teenager.
