User blog comment:B214/Talk About What You Want! 2/@comment-202.152.195.74-20140918143059/@comment-202.152.195.72-20140918185522

So you mean in clan's perspective not society's ??

Where did you get that info anyway?? So far in the LN it's only mentioned that Ultimate Class is any individuals who has done great deeds for the Devil World ( Kiba mentioned it in vol 10 IIRC)