The villainous young lady of a popular high school girl reincarnated in another world ~Miserable~

Comic Synopsis

An ordinary, slightly nerdy high school girl is reincarnated into the world of her favorite otome game as the villainess.
Her favorite character is not a handsome guy who is a playable character in the game, but a humble mob boy.
In order to achieve a happy ending with the mob boy, she negotiates to break off her engagement with the extremely handsome prince, but
On the other hand, the prince becomes obsessed with her, and in the name of bride training, he embraces her passionately...

Will she be able to escape the prince's insane obsession?