Wake up, go to work, go to sleep. Demanding parents, scheming co-workers, an abusive manager. After a decade of the same monotonous cycle with only her favorite otome game, Royal Hearts, to help her through, accountant Kyomi Yozora decided to take a life changing leap.
Awaking in a frozen forest, Kyomi finds herself in the body of the exiled villainess of Royal Hearts, Aurelie Scelerat. But when Kyomi realizes that the "villainess" she'd thwarted countless times was the real victim of the story, she decides to fulfill Aurelie's dying wish.

With the help of the three meter tall shadow monster, Yahime, Kyomi journeys to Purga, the frozen wasteland of the north where the last enemies of the Goldsplain Empire of Royal Hearts live. Will the enemy of her enemy be her ally? Or will Kyomi find herself surrounded on all sides while doing whatever it takes to vindicate the villainess?