Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni Tensei shiteshimatta...

Katarina Claes, the eight-year-old daughter of a duke, recovered her past memories when she was hit on the head by a rock. In a feverish nightmare, in which the prince's fiancee was determined, she have realized that this exactly like an otome game from her previous life. So, she have turned into a villain that interferes with the romance of capture targetsif the heroine got a happy end, Katarina would be exiled, but if the heroine got a bad end, Katarina would be killed. With no happy ending waiting for her at the end of the road, Katarina somehow have to avoid destruction and reach old age peacefully!