User blog comment:B214/Question and Answers/@comment-23789372-20131023004504/@comment-23789372-20131023103140

Ahh I see what your saying, because issei is still considered in rias' peerage he cannot fight her. But I don't they would want to fight anyways because they are in a relationship, so I mean obvi they don't want to see who is better and they don't want to physically fight each other. I mean I could be wrong, but will just have to see I guess.