I know >_>
When me and my friend (who is a huge fan of hsm, hannahmontana, all that disney shows) went to see it when it came out on the theaters on February 7, they had some sort of souvenir store, so when we took a look, I was like wtf. They had Zac efron mousepad, notebook, and all that things.
So next to the CDs, which my friend bought, there was that manga. I was again wtf? A manga? Why would you turn it into a manga?
I asked my friend about it and she said there were around two volumes (?)
But it seems english things are really popular in Japan, especially girls.