So, to resume, It's pretty obvious that Raeliana's soul (female lead) was suposed to enter Beatrice's body, instead of Raeliana's. And that's why Noah still liked the female lead in Raeliana's body?
You say Beatrice has Raeliana's original soul, but I don't think that's the case. Because she knows the development of the story. But it may be an option.
Okay, so maybe actually she was supposed to be the blonde one, but somehow the supposed brunet changed bodies so that she wouldn't die, but instead she still survived and married him, so now her soul wants her actual body and maybe the blond b it's happening the same, but for that to settle the brunet needs to die?
I love this black haired girl characters
ಡ ͜ ʖ ಡ also this like my hypothesis back then
Original Rae switch body with original Bea because Rae know she will got killed and she want to change her fate. Now original Rae in Bea's body. Also in chapter around 40-50 there's part when Rae back to home, she asks her maids and servant about her personality coz she can't remember well. They said Rae had done something weird once, Rae standing up the house and hysterics asking where she was. I think that moment original Bea in Rae's body. But I dunno where original Bea's soul now, is she in Park Eun Ha body?