Isegyeui Hwangbi

A Korean high school student named Sabina is transported to another world and time following an unexpected accident. She is sheltered by a duke from the Crentia kingdom but is soon presented to an unattractive elderly emperor as a concubine. After the emperor's death at the hands of an unknown assassin, Sabina becomes involved in a struggle among other candidates for the throne. She must navigate the dangerous dynamics of the court and secure the support of key individuals to ensure her survival.