Akuyaku Reijou ga Kyoufu no Haou to Seiryaku Kekkon suru Batsu wa Amasugimasen ka!?

On the verge of dying in a road accident, Sachiyo Yamabe spends her last moments reminiscing about an otome game she has been playing in her spare time. In a twist of fate, she is reincarnated in the world of the game—not as the heroine but as Marianna Brinzela, the rival and daughter of a duke who suffers a miserable future no matter the route.

Despite Marianna's efforts to avoid the female lead and not cause trouble, the crown prince breaks off his engagement with Marianna because of foul rumors. Fed up with claiming innocence and being ignored, Marianna decides to embrace her villainess persona and accept whatever punishment she is given to protect her family—she must marry the "Overload of Fear" Julio Gazelta, emperor of the neighboring country.

Whispers circulate that all the brides sent to the emperor have gone missing; yet, Marianna brushes them off in hopes she will be treated differently due to her reputation. Surprisingly, despite his intimidating face, Julio is nothing like what the rumors imply and instantly connects with Marianna. After all, a villainess and an autocrat might not be a bad match.