When the world turns a blind eye to evil, someone must become the darkness to punish it.

After a mysterious tragedy shatters his life, 20-year-old Kane awakens a cursed system called The Sin Ledger—a power that marks the wicked, punishes the corrupt, and grows stronger through the sins he absorbs.

Bound by a contract he never signed, Kane is forced to collect “Sin Points” by hunting down debtors—those who owe karma, justice, or blood. For every mission completed, he levels up… but each decision draws him closer to a horrifying truth: the system is feeding on his soul.

As Kane climbs the ranks of the sinful underworld, he must choose between redeeming the sinner or becoming a greater demon than them all.
He wears a demonic armor forged from guilt, commands powers of fear and judgment, and bears a monstrous second form—the Dread Kirin-Dragon King, feared by all dimensions.

But the true enemy is not just the sinners.

A Celestial Dragon—once a divine being—has descended to erase Kane and his blasphemous system from existence.
The war between heaven and hell begins… and Kane must master his powers before he loses himself to the abyss.

"Power without restraint is not strength. It is chaos waiting for a moment to burn."


The academy was still reeling from Jiwoon's summoning of the Abyssal Qirin. Though no one said it aloud, the entire class now looked at him differently.


The professor, still pale from what she'd witnessed, called Jiwoon forward.


"Jiwoon… Step into the evaluation circle. You've broken the laws of summoning as we know them. I need to understand… what are you?"


Jiwoon stepped forward without hesitation.


A glowing circle formed beneath Jiwoon's feet, this time drawn by the professor's Divine Mark. Unlike the others, this was no summoning—it was a compatibility and identity scan.


[Warning: Source unidentified. Reading: SIN SYSTEM – Level: Locked/Obscured]


The glyphs in the air flickered. The professor staggered.


"This system… it's not part of the Divine Order…"


"This isn't divine. It's something older. Something… that shouldn't be here."


[System Rejection: Divine Marks incompatible with Sin Protocols]


Before the professor could recover, a sudden chill filled the room.


Whispers—echoes of sins long buried—rose from the floor. Students clutched their ears. Shadows crawled up the walls.


A voice, not of this world, called his name. It wasn't hostile—but it wasn't kind either.


The Abyssal Qirin growled low, materializing beside Jiwoon, its gaze locked on something unseen.


[System Alert: Phantom Echoes Detected – Source: Unknown Rift Residue]


Jiwoon stepped forward, raising one hand. A black sigil burned into the air—the Crest of Judgment.


"This place isn't ready for what's coming," he muttered. "Neither are they."


"Tell your order this—sin cannot be erased. It can only be judged."


With that, he walked out of the room. The torches relit. The air cleared.


The students were left in stunned silence.


[Jiwoon: Status – Contained. Power – 1/5 Capacity. Threat Level – Suppressed (For Now).]


[Observation: Entity retains fragmentary memory of past system link. Recommend surveillance.]


Chapter 104 - EP.104 – Phantom Echoes and the Teacher’s Test