Guys, I've been thinking here since the beggining that in the o riginal story, this character dies. Suddently, some white haired gir, identical to her,l comes out of nowhere to aid the male lead. In the beggining there's' also something about the priestess even trying to rise from her coffin in the day she is buried. I didn't know exatly how this would all fit together, but now all of it makes sense! They knew she was her reincarnation because of her powers, supressed it in a way that she wouldn't even know of it and was easier to kill. When she finally died, they rose her up from the dead to use her as they wished. If you see the last image that appears that has abel and the girl from the story in it, her eyes seem kinda dead to me, and other than that, she is exatly the same as our protagonist.
My dude's here like 10 and he is so possessive about some other guy's woman? Come on man, that is bad on you. You're literally the main character in the original story, apparently, so you should be more than just a piece of shit. Calling my boy's a monster, you're more of a monster than he ever will be.
I think the reason he doesn't want her to marry him has something to do about her stone, the pills and Hades' family. Maybe if she stays near him for too long she might die, we don't really know why the character died early in the original novel. I get the feeling that she might be really powerful, or at least her body. I really think the resemblance to Deborah she has is astonishing. Maybe she dies but is reborn being deborah, or something like that.
NOOOO WHY DID SHE GO TO THE FRONT LINE LIKE THAAAAATTTTT AAAAAAAHHHHHHHHHH WHY DIDN'T HE TELL HER ANYTHINGGGG