User blog comment:B214/Question and Answers 6/@comment-32724211-20170921081847/@comment-3285616-20170921093809

No, fake Issei is not canon. The second half of BorN was anime exclusive, and DxD EX retcons the BorN timeline.

Rias can be shown to be quite pervy, with Issei, yes. But still pervy nonetheless. Just look at her smiling when Issei was caught off guard while she was on his bed. That's a pervy smile if I ever saw one. Same with Akeno who is defintely extremely pervy by nature,  but only wishes to be pervy for Issei.