The Villainess Will Bring Down the Marquis’s House!

An ordinary university student finds herself transported into the world of a manga, awakening as the daughter of a powerful marquis who is engaged to a prince. She soon realizes she has been cast as the villainess, and that the prince only agreed to the betrothal out of fear of her father’s influence. Once that influence wanes, he plans to break the engagement and destroy her family. Armed with knowledge of the plot, she sets out to alter her fate by convincing her father to take action and devising a strategy to prevent the downfall of their noble house.