User blog comment:B214/Question and Answers 2/@comment-5201137-20140121092424/@comment-1359322-20140123004301

We have seen Rias, Asia, Akeno, Koneko, Ravel, Gasper, Yuuto get their own Volume. And most of the POV are told from Issei's POV, so it's actually confirmed that V17-19 will be mainly told from Issei's POV. >_>