Honestly, I'm a bit confused with the spoilers I've read but here ya go! To those interested, basically the big bad is a cult of evil sorcerers/magic users/mages, yadda3x. Apparently the being that pushed Rae's current soul (Eunha aka Korean woman) was probably the goddess of the world. Now how does this tie to the current arc? Eunha was supposed to reincarnate as Beatrice/heroine but someone interfered (forgot if it was the cultists or old Rae), so right now the one inhabiting Rae is both Eunha and old Beatrice's soul(thereby making Rae the heroine and from what I can remember is what's partially making Rae unstable), current Beatrice is possessed by an evil witch from the cultists side if I remember correctly. Hopefully the manhua does a better job explaining eventually. The reincarnation stuff is a bit too much for my little brain to handle. I was just here for the ship, romance, comedy, sir Adam, the colorful Duke manor's people, and the King's shenanigans.
Now,endgame spoilers. Noah eventually finds out from the goddess Rae's current situation and basically helps Noah reincarnate in modern times, so basically its Eunha/Rae/MC's (but she looks like Rae in the proposal pictures) turn to look/wait for him. Dunno how Noah's memories got restored or if they were intact all along since the one who gave spoilers did not read the bonus side stories yet. I believe they'll have a daughter in the future for the sequel stories. 2nd ML, Justin is given the book of destinies by Rae so that he can also find his own soulmate. *sigh* the poor chap just HAD to fall in love with a married woman twice so yeah, he needs all that help. Bonus boring addition, evil red head younger sis Shamal dies in evil Bea's hand in an attempt to frame Rae.