At eight years old, Ijin Yu was the sole survivor of a catastrophic plane crash in a remote foreign warzone. Separated from civilization and forced into survival, he was inducted into an elite private military outfit known as the Numbers camp. Designated as operative "001," Ijin was forged into an apex covert operator proficient in close-quarters assassination, tactical ballistics, extraction maneuvers, and situational threat neutralization. A decade later, he breaks free from the battlefield and returns home to South Korea to reunite with his remaining family: an aging grandfather and a younger sister, Dayeon Yu.

Striving to acclimate to everyday civilian life as a high school senior, Ijin quickly discovers that peacetime harbors its own cruelty. When vicious school bullies target Dayeon, Ijin dismantles the abusers using measured, surgical violence. His presence draws the attention of violent campus gangs, organized crime syndicates, and the influential SW Group, where he takes on high-stakes executive bodyguard duties for heiress Shin Yuna. However, peace remains fragile as the surviving Numbers operatives from his past trace his steps back to Seoul, forcing Ijin into lethal shadow confrontations to shield his home from the bloodshed he left behind.

What to Expect

Pacing remains relentless across episodic high school protection conflicts and sprawling multi-chapter corporate assassination arcs. Combat relies on grounded military methodology: realistic knife disarmament, joint manipulation, practical firearms handling, and spatial awareness rather than supernatural power systems. Strategic tension mounts as Ijin navigates high-stakes corporate espionage while withholding his lethal identity from his family.

Who Will Enjoy This

Readers who appreciate disciplined, calculated protagonists defending loved ones will find a rewarding experience here. Fans of high-octane martial arts, executive protection thrillers, and grounded action webtoons like Weak Hero, God of Blackfield, and Lookism will appreciate the meticulous tactical precision.