My Mr. Perfect Assassination System

Kael, a billionaire betrayed and murdered by those who envied his success, never expected a second chance at life. But fate has other plans—he awakens in the body of a clumsy, good-for-nothing nobody. [ Congratulations. You died like an idiot. ] [ System initializing… Mr. Perfect Assassination System Activated. ] Struggling to survive in poverty, Kael’s life takes a drastic turn when he unlocks the Mr. Perfect Assassination System—a ridiculously powerful yet annoyingly talkative system that turns him into a master killer. To survive and grow stronger, Kael joins a mysterious assassination organization, stepping into a dangerous world filled with deadly missions, ruthless killers, and hidden conspiracies. Now, armed with a perfect system and a mind sharpened by betrayal, Kael sets out to rise through the ranks, build his wealth, and take revenge on those who once destroyed him… Even if it means becoming the most feared assassin in the shadows.