User blog comment:The Ultimate Pawn/Clarifications on Issei's harem and his peerage/Peerage and Harem Predictions/@comment-199.195.224.47-20170204150402

We haven't met the Knight that Sona wanted to say which would be stronger. I don't know about Bennia fitting perfectly we have not seen enough of Sona's whole team fighting together to say that. Sona could flawlessy integrate anyone into her team we saw her use Rias team better than Rias. So I'm not saying a trade is going to happen, but there are plently scenarios were I could see Sona trading Bennia. So fit and integration for Sona I don't think is a problem. Bennia being in the harem is 100%, I thought that was obvious when she was first introduced. She does not have to be in his peerage, but his harem is almost guaranteed. I like the idea of Jeanne joining the peerage, but couldn't she stay with Cao Cao and still be part of the story. Bennia and Elmenhilde would be choices for peerage and harem before Jeanne