User blog comment:Daime17/Vali Peerage/@comment-10330822-20170725123253/@comment-2601:8C:601:5692:3D30:770C:CE5:1085-20170725141457

@Bennia, don't mix real-world myth details in with DxD too much. There is nothing suggesting Lilith to be anything but a Devil in-universe, otherwise Rozevim's treatment of Vali would have been hypocritical. Anyway, nowhere does it say they are the last of their bloodlines, just that they are virtual exiles living at the edge of Devil territory and refusing to acknowledge the Current Satan Faction nor be involved with anything created by them (such as the Evil Pieces and the Rating Game). Those we met were something like direct-line heirs of the Old Satans, whether their immediate successors or their grandchildren or younger is not made clear except for the House of Lucifer, but that doesn't say that siblings or aunts and uncles of Shalba'S bunch don't exist.

As for Vali's peerage, it's honestly hard to say what will happen. Most of the members of the Vali team are too independent to become a member of his peerage. And most have positions that would cause trouble if they reincarnated as Devils, even if they are already going rogue. About the only one viable is Kuroka, but even she's questionable since her even she might refuse to except a master due to her past, even if she has excepted Vali as a leader.