Board Thread:BlazBlue: Centralfiction/@comment-25172038-20160830201857/@comment-29820098-20160906003530

They mention it in the wiki about it but I feel it is worth bringing up here than the story of the girl being the monster and the hero never saving her is similar to the story regarding the Black Beast and it's right.

Hero = Haku-men, who leads a group of heroes to slay the beast

Girl/Monster = Nu, a replica of Saya and, by proxy, Noel who are both directly tied to the Girl. She, as the Murakumo Unit, acts as the Heart of the Beast

However, you can also tie this to Saya/Hades and Ragna's story as well.

Hero = Ragna, who is asked by Rachel if he'd commit sororicide (killing one's sister), and admits to himself in the beginning Chronophantasma that he wouldn't be able to keep his promise to Celica about protecting Saya

Girl/Monster = Saya, who has been shown to still want to be with Ragna and for him to save her, is the Girl. The Monster is Hades, the embodiment of the Drive of the Girl herself, who seeks the destruction of the Girl herself.

The parallels are quite fascinating.