Tensei Akujo wa Waga Michi wo Iku

I am a successful woman in her 30's excelling at her career. But I guess the tables turn when life seems too perfect. It is just my luck that I woke up as Camilla Elchasis, a character in my favorite novel whose life is filled with trouble. After possessing Camilla's body, I first need to get rid of my ridiculous fiancé and his mistress who are fooling around in my house. I must also deal with my half-sister and father who wish to kill me. Meanwhile, why is Duke Caliet so obsessed with me? "You started it, so I'll finish it."

(Source: PocketComics)