Just in case someone sends the link, I'm here for it lol
Found it:)
Don’t know what ch tho:|
https://www.novelupdates.com/series/suddenly-became-a-princess-one-day/
AheM the manhwa is different from the novel
For real? How so?
Many details like how Lucas was suppose to stab athanasia and claude with the world tree branch for them being able to live longer than any human can possibly go so they can all 3 live long(Lucas is kinda immortal right? And by the end him and athy will be together). Also Lucas was helping athanasia practice for her debutante and helping her wear her shoes and removing it(I don't really remember). Athanasia was also suppose to be away for quite years to study and find how to cure her dad she's at a university ig and there he met the third ml Cabel he's also at the manhwa "beware of brothers" one of the fl brother there(you can check it out).
PLZZZZ THE NOVEL LINK