User blog comment:B214/Volume 22 spoilers/@comment-201.215.165.7-20170213165134/@comment-30924344-20170215023028

In DxD's devil society, blood has nothing to do with nobility/ranking, but that does not mean a child born between a pure-blooded devil and a reincarnated devil will be classed as a pure-blood simply because of that. That child is a half-blood because they have the reincarnated devil's origin blood inside them.