My Bodyguard is a Grandmaster?

Trained as the supreme fighter, now a mere guard, Liam is tasked to protect a billionaire heiress, Jolin. Hunted by her schemes and rival heirs, his secrets teeter on the edge — he unearths the secret massacre of his family, and the truth of his real bloodline. Invincible at last, will vengeance consume him… or set him free?