Contract with the Abyss The Demon CEO's Substitute Bride

Serena, a humble intern, is pushed by her cruel half-sister Victoria into a stand-in marriage meant to take Victoria's place. The groom is a feared demon CEO whose cold reputation hides a far stranger secret, and Serena soon finds herself bound to him by a contract she never fully understood. Her hidden identity as the real heiress now puts her at the center of a dangerous family rivalry, and every step toward the altar tightens the supernatural ties between them.