The world changed suddenly. One night, millions of people suddenly found themselves in ruined cities called “The Seal of Night.” In a dark and deadly world, courage alone was not enough to survive; they had to be equipped with mysterious powers awakened within their minds.

Riven Altarai, an ordinary high school student, was pulled into the very center of this chaos. The monotony of his life was shattered under the blood moon, and the talents hidden inside him began to awaken. However, “The Seal of Night” was not just a game; walking the fine line between reality and death, he would fight not only enemies but also the darkness within himself.

Between system-assigned missions, power-granting stat screens, and rapidly approaching waves of monsters, Riven and the other summoned ones would not only survive but also shape the fate of humanity. In the depths of the dark cities, mysterious secrets and betrayals came to light, and everyone had a price to pay.

The Seal of Night is a dark survival battle where death is danced with, strength and will are tested, and everyone confronts the shadows within themselves.

It was nearly midnight.The world seemed divided into two by an invisible veil. Under the flickering streetlights, people went about their daily lives. But there was a truth no one knew: at these hours, behind the ordinary, another reality was awakening.


In the sky, the stars were dimming, and time itself was slowly coming to a halt. Even the breaths of people seemed to pause. Only a few remained; in their eyes shone a different light, and in their hands rested a hidden power.


Within that darkness, an ancient seal glimmered—Seal of the Night. This seal, which maintained balance, silently determined humanity's fate. And that night, the seal would touch a new bearer.


A dark figure walked silently. Their steps were heavy, tired but determined. In the depths of the night, boundaries blurred, and the unknown pulled all living beings inward. A scream echoed, then silence. Deaths began.


Under the shadow of Seal of the Night, lives changed and destinies were written. That night was a beginning for everyone—especially for one young person.


"Hidden powers are awakening.Discover your abilities, push your limits."


"Maintain your balance, do not surrender to the darkness.Every choice shapes your destiny."


Prologue — Seal of the Night