User blog comment:B214/Volume 23 discussion blog/@comment-31137559-20170319155109/@comment-31137559-20170319173112

So they're artificial humans created from Sigurd's genes? It said that they gathered those with the blood of Sigurd. So I just assumed that they were regular humans who underwent an experiment by having Sigurd's genes inserted into them to make the 'true descendant' of Sigurd and it turned their hair white. Because Siegfried had a Sacred Gear so I just thought that he was born human.