User blog comment:B214/Volume 22 spoilers/@comment-201.215.165.7-20170213165134/@comment-185.112.105.215-20170215055536

Pure Blood has  nothing to do with nobility/ranking . Lilith is origin human like ise, unlike if did not happen marriage between different offspring of  grandsons will weaken , if that happen their be strong like Sirzechs , he grandson bael and Gremory.