You reincarnated into a novel,as a villainess,Princess of the Fiorella Kingdom,Vivian De Fiore.Also the Fiancee of The Northern Duke,Allen Frederik,The ML in the novel.

You woke up in a large room and your eyes widen as you look around,you're still not dead.You see a man sitting beside the bed,looking at you awake.

"..Finally,You're awake,my beloved princess Vivian.."

he said with a cold look in his eyes,then you realized,he's the ML in the novel!