A human hero famed for slaying demons rescues a woman on the battlefield, only to awaken in the demon realm mid–wedding to her. She is a high-ranking demon seeking peace through a binding alliance, while he harbors deep hatred toward her kind. Bound by a pact that lasts until an heir is conceived, their forced marriage becomes a clash of prejudice, duty, and uneasy desire. Can enemies turned spouses find peace before war ignites again?