May 20, 2030.
An unknown figure stands atop the tallest building on Earth — and the age of hidden fear begins.
Beneath the fragile surface of reality, gods and indifferent higher entities rule through an invisible judgment system that mortals were never meant to witness. Ancient clans that once kept the balance have been hunted to extinction. In their wake, a secretive government organization gathers the shattered survivors of the supernatural — branding them Sinners.
They are not saviors. They are not monsters.
They are living proof that even divine judgment can break.
Rookie Sinner Karry steps into this shadowed world alongside the ice-veined operative Sasha and the eerily composed Arnold — a man whose calm hides depths no one dares question. Their first mission is simple: rescue hostages from a routine threat.
It ends in catastrophe.
Breaches tear open between realms. Cities vanish without trace. Entities from above descend like hunters, while governments below scramble to erase every witness. As the veil rips wider, Karry uncovers the chilling truth:
The gods are not protecting humanity.
They are evaluating it.
And walking silently through the growing storm is Arnold — a figure who understands the rules of existence better than any god, fears nothing, and draws his blade only when the line between survival and annihilation is crossed.
Because when the final judgment descends…
it will not arrive as war.
It will arrive as calamity.

Suddenly, a memory from three days earlier resurfaced.


Frank's father stood near the door before leaving.


Frank's Dad: "Frank, before I leave, I have something to tell you. Here... take these."


They looked exactly like ordinary Ritna coins.


Frank's Dad: "Listen carefully. What I'm about to tell you... you'll understand later."


Frank repeated every sentence until his father was satisfied that he had memorized the code.


With a relieved smile, his father continued.


Frank's Dad: "Go to Greetword 4 Alley and find a beggar."


"Only after that will he ask you questions."


"And only then... give him one of the coins."


His father placed his hand on the doorknob.


Frank's Dad: "Remember... only use the coin after you're mentally stable and capable of sensing whether someone is following you."


Frank's Dad: "Time for training. Frank, I'll be back tonight."


He finally understood the meaning behind the letter his father had left.


"If time desires... we may meet again."


His father had never expected to return.


Frank still didn't know why his father had made such a decision.


He had never understood the meaning behind it.


A mechanical voice echoed through the cabin.


Whenever people spoke to one another, their conversations were serious and brief.


Frank walked through the crowd before approaching a stranger.


Frank: "Sir, could you tell me where I should go?"


Frank: "Sir... I don't have any money."


"How can a place like this exist?" he wondered.


"The only reason these people stay together..."


"Is because they all share one goal—bringing down the Neutral Kingdom."


"But what happens after the Neutral Kingdom falls?"


The speaker was a handsome young man dressed in dark clothing.


His black hair matched his cold expression.


"If you want to survive in this place..."


The man stepped closer and whispered into Frank's ear.


Man: "You're James' descendant... aren't you?"


Chapter 50 - Dad I understand you