Вот что написано на wikipedia:
"The series is set to air April 10 2008 and will contain 24 episodes, though it is believed that the animators will be taking a mid-season break, airing 12 episodes now and the second half later on in the year. It is produced by Studio DEEN. Most of the seiyūs that will be voicing the characters are originally from the Drama CDs created for the manga."