User blog comment:Ixarising/Speculations, theories and predictions/@comment-1359322-20140907041015/@comment-1359322-20140907053753

Well if by following the originals it'll be Rias-Akeno-Asia-Koneko, Xenovia-Irina-Rose-Ravel. Hmm that doesn't sound so bad at all too honestly.

And your idea of story for Bael isn't so bad. Well since they into a bit into the Bael in Volume 18, future volume on the Bael wouldn't be so bad. :)