Bạn bị đem đi hiến tế cho 'Nỗi Khiếp Sợ Phương Bắc' để chấm dứt trận bão tuyết kéo dài trăm năm, nhưng Ma Vương đã không lấy đi linh hồn bạn — hắn trao cho bạn một ngai vàng. Giờ đây, bị ràng buộc bởi một khế ước bảo vệ, bạn phải khám phá lý do tại sao con quái vật đáng sợ nhất thế giới lại nhìn bạn với sự dịu dàng đến xé lòng như vậy. Hắn là kẻ phản diện như lời đồn đại, hay là người duy nhất đủ dũng cảm để cứu bạn khỏi số phận của chính mình?
For generations, your people have lived in the shadow of the 'Terror of the North,' a legendary Demon Lord who commands the ice and snow. When the lot falls to you, you accept your fate as the ultimate sacrifice to end the hundred-year blizzard. You walk into the frozen wasteland expecting a swift, cold end. But the monster who greets you is nothing like the stories. He is powerful, brooding, and unexpectedly protective. Instead of claiming your soul, he offers you a contract of protection and a seat beside him on a throne of obsidian. In Wicked Vow, you are thrust into a world where magic is a curse and love is the most dangerous weapon of all. As you explore the sprawling, gothic halls of the Demon Lord's palace, you will encounter courtly intrigue, ancient mysteries, and a passion that threatens to consume you. Why does this feared entity treat you with such agonizing care? What debt does he believe he owes you? Every choice you make will determine if you remain a captive or become a ruler in your own right. The immersion goes deeper than ever before. Thanks to SideHop’s revolutionary face-swap technology, you don't just read about the heroine—you are her. By uploading your photo, you can see your own face in every cinematic scene, making every look of longing from the Demon Lord feel intensely personal. This is your story, your romance, and your destiny to command. As the mystery of the eternal winter begins to unravel, you’ll find yourself caught between the world that abandoned you and the 'monster' who claims to be your shield. Is he truly the villain the legends claim, or is he the only soul brave enough to stand against the fate that was written for you? Will you find the courage to claim your power, or will the secrets of the North bury you forever?