Emerald13

[Justice delayed is justice denial!]
Kai a regular detective was killed by his partner after he uncovered the case he had been following for years now.
Dying with hate in his heart, Kai thought all was over for him, but something sudden appeared in his eyes.
[Host has awakened the Nemesis]
[Host has become the vessel of Nemesis]
[Become the man who sets the world back in order!]
In a world were massive crimes were happening 
in broad daylight,  christmas day, and even  new years. One man would rise to become a god.

Crazy Detective: I Have The System To Change The World.

At that moment the chief's face twisted with rage as Kai held his phone. His breath was heavy, his swollen lips trembling as he barked out, "You're in trouble, Kai! You have no idea what you've just done!"

However Kai remained calm, flipping the phone lazily between his fingers. His expression was unreadable, but his eyes were sharp, studying every micro-reaction from the chief.

The older man struggled against the ropes, his voice laced with something between anger and desperation.

"If you do this, if you make that call, you'd better be ready to kill me first—because if you don't, they will come for you before I do."

Kai tilted his head slightly, a smirk forming on his lips.

The chief's mouth snapped shut. That was all Kai needed.

Then he leaned forward, voice smooth but laced with an underlying menace.

"So you are corrupt," Kai said. "You just admitted it."

Chapter 116