"What? I'm a villainess? By the way, what is evil anyway?"

The young lady of the Marquis family, Cecilia, had memories of her previous life. Cecilia was engaged to the prince, but then a saint appeared. In this world, it is desirable for the saint to become queen. The engagement of the two without love was about to be broken due to a family promise. Having become a villainess, Cecilia devised a plan to carry out her villainous role.