User blog comment:Mnzombie/Issei's Peerage/@comment-175.144.85.24-20120711121304/@comment-60.53.97.0-20130529083827

Actually even if Issei becomes a High-class Devil, he is still Rias' Pawn that fact will not change, he will still have to battle for Rias during Rating Games as her Pawn. The Best example is Tannin, he is now an Ultimate-class Devil but he is still Mephisto Pheles' Queen.