User blog comment:B214/Question and Answers 4/@comment-24173056-20150224030239/@comment-24502975-20150224140041

^Except Ise might, just might, have people in his peerage that aren't a part of his harem!! Crazy idea, I know.

On the topic of Rias becoming Champion before Ise starts his peerage... Considering I doubt Ishibumi would want to save Rias and Ise reaching their goals for the epilogue, I think the Gremory group will end up defeating Belial and his peerage without any outside help, causing Rias to be given the title of Champion since she beat the #1 fairly and it would be useless to make her team go through the ranks. That way we can see Ise's peerage in the final arc.