@fetusdeletus@marianolinx Sort of yeah, just kind of an accidental child. Exister was purposely made (she's an artificial spirit, after all) and so was Note. Arge was not purposely made, though unlike those two. As for babies...I'm assuming the normal way is there- Though I'm not sure if Vampires can have children since they're kind of like spirits or fairies. Maybe magic is how yuri pregnancies happen?
The way I read it is that the magic ( magoi?) surrounding Cyril's grave is what was used in the formation of Arge's body, thus giving her Cyril's appearance and similar magic.
Essentially, if indirectly, Arge can be seen as Cyril's daughter.