User blog comment:Jopjopjop/Volume 20 Spoilers/@comment-64.134.226.149-20150720175522/@comment-1359322-20150720181456

You're confusing strength with class. For Reincarnated Devils, they all start with Low-class and have to go through promotion test to be promoted to the next class. So Ise is currently still a Middle-class Devil in rank but not in strength.