So about the marks, it seems like our FL has a mark too implanted by the blonde dude. So she doesn't remember everything, only fragments, like Regan.
the curse mark on the blondies back seems to be a contract or some sort. Maybe he tried to revive his human lover (the purple head girl), and I think she became our FL.
By doing this, Regan and FL's memory has been altered, maybe these 2 were actually lovers in the past.
So about the marks, it seems like our FL has a mark too implanted by the blonde dude. So she doesn't remember everything, only fragments, like Regan.
the curse mark on the blondies back seems to be a contract or some sort. Maybe he tried to revive his human lover (the purple head girl), and I think she became our FL.
By doing this, Regan and FL's memory has been altered, maybe these 2 were actually lovers in the past.