Missed My Happy Ending, Met the Demon Grand Duke

Synopsis

A college student named Charlotte reincarnates as Charlotte, the heroine of a manga and the daughter of a marquis. After accidentally making a wish in front of a demon instead of an angel, Charlotte discovers that her love interest, Prince Isaac, is actually a scheming yandere. With the help of Maynard, the demon who lives in the same country as the Grand Duke, Charlotte must navigate this new reality and avoid Isaac's obsession.