Adapted from a light novel written by Yamaguchi Satoru and illustrated by Hidaka Nami. Katarina Claes is the only daughter of a duke. But, at the age of eight, he had a bad incident and his head hit a rock. And at once, he recalled all the events in his previous life. In his previous life, he was an otaku who died on his way to school after staying up late playing an otome game called Fortune Lover. After realizing that his current environment looked very familiar, he was surprised and convinced that he had been reincarnated into the world of Fortune Lover as a villain. In the game, the end that awaits him is dead or exiled. Because of this, Katarina decided to use her knowledge of the game and each of its routes to avoid the worst situations. But, can the criminal reach a happy ending?