Akuyaku Reijou ni, Tasukete Kureru Hero Nante Imasen

Vivietta, the daughter of a marquis, is seen by her fiancé, the second prince, when she slaps another young lady who is approaching him. At that moment, Vivietta remembers her memories from her previous life as a Japanese woman. In this situation... Could it be that I am a so-called villainous lady?! If this continues, my engagement will be broken off and I will be ruined! Even if I try to avoid the revenge that is unique to reincarnation in another world, it is already too late. I have no allies, and the knowledge of my previous life is useless. Just when I was at a loss, thinking "My life is over...", His Highness summoned me. If I was reincarnated as a villainous lady, surely there would be a hero to help me? This is the story of a woman who gives up, but at the same time, hopes and struggles. (Source: Creek & River)