My Seven Gorgeous Sisters Don't Know I'm the Hidden King

He has seven breathtakingly beautiful sisters who dote on him—but none suspect he's become a king who makes the world tremble. From an aloof CEO to a miracle doctor, a deadly assassin to a mysterious enigma, each sister is extraordinary in her own right. Fifteen years ago, they took him in as family. Now it's his turn to protect them from the shadows, even as they try to shield their 'little brother' from danger. A hidden identity, unconditional devotion, and the ultimate reversal await!