Playful Tyrant: Secret Ruler of the World

Theo Martin returns home to repay an old debt by protecting wealthy heiress Hilda Kidd. Their first meeting ends in chaos when she mistakes him for a creep. Still, the two end up getting engaged. As assassins and powerful enemies close in, Theo repeatedly saves Hilda with overwhelming strength and exposes shady schemes. He gradually earns her trust. After revealing his feared identity, he crushes rival forces and rises as an unstoppable global powerhouse.