User blog comment:B214/Shin DxD 1 discussion/@comment-37165251-20190120161656

The Part about Ingvild, that she awoke her Devil Heritage through genetic atavism, which means her Parents and Grandparents could live as normal Humans and in Ingvilds case her sleeping Devils Genes activated (maybe because of her Sacred Gear) and she is different to her Parents not a Human but a Devil Human Hybrid....fascinating^^.