@Phil101
What I remember is Yawaraka Black until now only had 3 volume of MahoChobi and One book (vol 1,2,3 + bonus page [?]) and I think that will be more in future.
But Yawaraka-sensei have another book about Miho with Mako (2 volume if I correct)
Well, if you want MahoChobi... That is a lot...