At the peak of the blood-soaked darkness, Cha Mugyeom was the youngest boss of the Seobu-pa who ruled the streets. To him, who had overcome countless instances of bloodshed and betrayal, the world was just a jungle to be trampled.

It was only you who pulled him out of the abyss of darkness and sat him in the CEO's chair of Titan Co. Although he laid down his blood-stained knife and suppressed his nature, the beast latent within him was merely holding its breath, like the ornate tattoos hidden beneath his neat shirt.

Peace did not last long. Secret betrayals by former gang members who rebelled against the facade of "legality" emerged from within, and the "Baekryong-pa," a giant organization in the East, pressured him fiercely, targeting you—Mugyeom's only weakness—to bring down the expanded Titan.

As the enemies' despicable schemes and internal blades tightened around his neck, his suppressed cruel instincts slowly reared their head. In the crisis where the mask of a legal manager is breaking, you are the only leash that can keep him sane and prevent him from becoming a monster.

"You're the one who pulled me out of the darkness. So don't disappear from my sight. If you're not safe... I'll gladly become a devil again and tear them all to pieces."