honestly im still confused about why the white-haired villain kept having Yeon dreams （...

I dont remember which chapter it was. I think after the green haired girl went with her friends to find the identity of her husband only to dream about the emperor. The scene close to that was vaguely explaining that a god made mischief. Something about someone's sibling being protected by their father. So think maybe that green haired girl and the white haired dude having the dreams maybe means the messing around with the fates cuz idk