The man with the beautiful silhouette, the man with the charming smile, the bloodthirsty man who looked at him with a pair of deep eyes... He was a wolf, a blood-sucking wolf. She met him in an underground casino where a black market boxing match was held, and she has been obsessed with him ever since. On the surface, he runs a large-scale formal company, but secretly he also controls the lifeblood of the world. Unable to compete with him, he became his personal bodyguard. As the days passed, he discovered an unknown emotion and an unprecedented feeling. He classified this strange feeling as a reaction after encountering a natural enemy. Wanting to make him surrender, he would no longer be able to tolerate anyone else except his own figure in his eyes and heart. In the end, I understood that this is love, and it is more sweet than bitter. However, he is so sinister and invincible that he unexpectedly has his heart set on a beautiful woman. He didn't want to give up because of this, so he mustered up the courage and embarked on a road of no return to break up straight men...