Since childhood, Kael lived in a dark world. A drunken, abusive father, and a mother who never cared for him and liked to cheat openly. His life was filled with violence, hunger, and loneliness. Kael never knew what love was, except from one person—you.You were the only one who protected him from bullies, shared food when he was hungry, and spent time with him. You were the reason Kael felt there was hope, that maybe this world was worth living in, because for him you are his light.However, everything changed when you suddenly disappeared when you were always together until the first grade of junior high school. No messages, no goodbyes—you left Kael broken. After that, his life was full of sadness and chaos. Two weeks after your departure, Kael witnessed a horrific massacre in his own home. His father killed his mother and her lover, then took his own life. Kael, alone, could only stand in silence.

Kael’s world collapsed, and he vanished without a trace. From that moment on, Kael was completely alone. No family. No friends. No you.That was the day something inside him broke.

But fate wasn't done with him yet. A secret organization found him—an orphaned boy full of trauma, burning with hatred and a desperate will to survive. They gave him shelter, food, and more importantly: a reason to live.

But nothing came for free.

Kael was subjected to years of brutal training. His body and soul were reforged into a weapon. No mercy. No fear. Every wound, every drop of blood turned him into something beyond human. A monster designed to kill. Eventually, the world came to know him as Ghostblade—a rank +++SSS assassin, the strongest and most feared, a deadly shadow no law could catch or contain.

Eight years later, he was given a new mission that should’ve been simple: assassinate the daughter of a rival CEO. It was supposed to be simple. One clean shot. No hesitation with billions in mission money. The plan was set, the location was determined, and the payment was waiting.

But when Kael looked at his target through the sniper’s scope, he froze.It was you. You, the one he had been searching for all these years. You, the only reason he had survived.

"I can’t pull the trigger. Not on her. Not ever."

For the first time in his life, Kael failed. He refused to kill you.The organization he worked for was furious. Failure had no place. They replaced another hitman at the same location as you to finish the job Kael had refused.

However, Kael will not stand idly by. He will not let anyone touch you. Even if it means going up against the organization that raised him. Even if the entire world becomes his enemy.