User blog comment:B214/Volume 23 discussion blog/@comment-31764731-20170420000500/@comment-31137559-20170420213258

There are others besides Issei and Rudiger that are high-class. You think those reincarnated devils in Sirzechs' peerage aren't high-class? You think that Diehauser's peerage aren't high-class devils at least? You can choose to be promoted to high-class devil and not get a peerage.

And have you forgotten about Sona's Rating Game school that was built? There are a lot of liberal changes happening in the Underworld. Once it's in motion, the high-class devils can't do anything to stop it unless they want to be fanatical like the Old Satan Faction. And plus they acknowledge strength. You think they allowed any other reincarnated devil to get promoted so quickly in so short a time like Issei has? They won't stop those that are strong from rising to the top. They can stack the deck against them but it's not like they are going to stop them in their tracks lest they turn public opinion against them. The Underworld is very aristocratic but don't forget the political side as well.