Ichinino Sanshi

Aurelia, the daughter of a marquess, has been faithfully serving as the second prince's fiancee despite being rumored by those around her to be a wicked woman. One day, however, the carriage in which she was riding falls off and she is declared a pariah. When Aurelia discovers that her fiance and half-sister are involved in this incident, she takes every possible measure to bring them to their doom... Aurelia is a bad girl? That's the biggest compliment I can give right now! The story of a shunned daughter who returns as a villainess, and a brilliant reversal of fortune begins!