User blog comment:B214/General Discussion/@comment-1359322-20160527052230/@comment-213.120.234.122-20160527134640

This is just a shot in the dark, but in terms of what you've said about volume 22 I have a theory on what may happen in terms of Rias "attaining happiness". Given the situation from volume 21, and how far Issei and Rias have come along, I'm suspecting maybe Issei might consider this a good time to pop the question. Failing that, maybe popping his cherry at last? Off screen obviously like in Rakudai Kishi no Cavalry. Again it's just a shot in the dark. No ideas on what may happen for Akeno though.