The manga has beautiful art, and had a lot of potential, however sadly it was canceled and here's why:
This manga was based on a comic originally from Italy. The comic received its own animated series and was translated in several languages. Apparently, this was most likely the reason a manga for W.I.T.C.H. was created in order to get new fans in Japan, but sadly, it didn't succeed.
However, regarding what the story was eventually supposed to end up being, the original comic was a creative, great and long series influenced by magical girl anime, and I give it an overall 10. I suggest giving it a try asides from its manga version.
Any ?"s of this series let me know, I have lot of info.
