こ、こんなイケメンが私の幼馴染みで婚約者ですって？ さすが悪役令嬢、それくらいの器じゃなければこんな大役務まらないわ

Rin suddenly finds herself reborn as Richeri, the daughter of a duke from a country called Elland. Her fiance is the crown prince, Jinon... Could this really be the world of the otome game her little sisters are crazy about? And what's more, I'm the villainess who tricks all the targets of her love!? ...That's just too difficult for someone like me with a zero love quotient! In that case, Rin wants to quietly aim for the bad ending and go to a convent,but she finds herself getting sucked deeper and deeper into Jinon's swamp of suspicion... An eventful love fantasy about the heroine, reincarnated as a villainess with polar opposite personalities, and her sadistic childhood friend, the crown prince