From the Start, I Contracted the Demon Lord and Became the Divine Clan’s Beloved

A girl with the bloodline of an ancient god, who has slept for ten thousand years, unexpectedly meets a demon prince burdened by a blood feud. Amid the turmoil engulfing the realms of immortals, demons, and mortals, they go from using each other to pledging their lives to one another. In the end, they join forces to uncover an ancient mystery and restore order to the Three Realms.