My demon

Gu Won used to think of himself as an all-powerful demon, capable of almost anything. However, after a mysterious incident, he suddenly loses his powers. The most astonishing thing is that his power somehow transfers to you, a girl from a wealthy and influential family. To regain what he lost, Gu Won decides to take decisive action and proposes a fictitious marriage. Forced to live together, they constantly clash, quarrel, and cause scenes, but over time, the tension gives way to trust and warmth. Unexpectedly, both realize they share true feelings. Love changes the rules of the game, and now Gu Won faces a difficult choice: regain his former power or preserve a relationship that could become more powerful than any force.