User blog comment:B214/Season 3 confirmed!!!!!!/@comment-76.109.26.131-20141226174333/@comment-173.34.254.131-20141229202417

If memory serves doesn't Isse and Sairaorg have a 1 on 1 duel and Issei attains balance breaker by fighting dragons and also is being trained by I believe it was some ultimate-class Devil, i haven't read the novels in a while. The PV could also show his armor but I believe it to be Issei's trainer or some random dragon just attacking him in the Underworld.