Theristis WebComic

Devil Slayer

The Gathering Storm

Free

After defeating Protos, Mortis is left severely wounded and is taken in by his cousin, where he recovers from the aftermath of his first true victory. As he regains his strength, he is introduced to the Vanta Legion—an organized force combating the growing devil threat. With the world around him expanding beyond personal revenge, Mortis is drawn into a larger conflict as the first movements toward an assault on Stormhavn begin.

Devil Slayer

The Devil Slayer

Free

Amidst the haunting aftermath of the Varnholt Incident, where countless lives were snuffed out, stands Mortis, a solitary figure bound by fate to confront the malevolent Protos. Their predestined paths have woven them into an inevitable and perilous encounter. Driven by an unyielding quest for vengeance and a desperate need to break free from the demons' grip, Mortis thrust into a battle that tests the very essence of his being. As the clash unfolds, Mortis pushed to the precipice of his existence, where every fiber of his strength and willpower is demanded to the utmost. With each passing moment, the odds stack against him, and the only thing left to do is to shatter those limits and seize the opportunity for retribution. On the brink of defeat, Mortis, he manages to outmaneuver a cunning ruse against Protos, turning the tide of the battle. For the first time in half a century, a devil is vanquished at the hands of a mortal, marking Mortis' ascendancy to the dreaded title of 'Devil Slayer'. But this victory comes at a cost, foreshadowing a much darker and more formidable adversary.

Devil Slayer

Embers and Echoes

Free

Still bleeding from his defeat, Mortis awakens in the care of Arthur Pontiac, the reclusive doctor who once owed his life to Mortis’ vanished grandfather. As his wounds begin to heal, Arthur becomes more than a healer—offering Mortis harsh lessons in survival, combat, and the true nature of the devils. With renewed strength and purpose, Mortis sets out once more, following the scorched trail left behind by Protos. His pursuit leads him to a village engulfed in flames—where fate brings him face to face with the monster he failed to kill.

Devil Slayer

The Devil's Warning

Free

Wandering the wilderness with nothing but vengeance in his heart, Mortis begins his search for the devils who tore his world apart. But the silence of the woods is shattered when he is ambushed by Protos—one of the last 5 remaining devils—and his horde of demons. Overwhelmed and on the brink of death, Mortis is saved by a final gift: the awakened strength of the demon slayers, granted by his father’s spirit from beyond the grave. With his newfound power, he crushes the demon army—but Protos proves far beyond his reach. Broken and bloodied, Mortis is left alive… as a warning.

Devil Slayer

Ashes of Home

Free

A boy named Mortis Theristis is pulled between two worlds. On Earth he’s a regular kid, wanting to skip school to train; in the Underworld he’s the last hope foretold by prophecy. Lucifer - who has already murdered the Theristis bloodline - destroys the family home and kills Ander and Machira while Mortis watches helplessly. With his final breath, Ander tells his son to find his cousing - one of the last remaining demon slayers - Gallord. Mortis, now burning with vengeance, vows to finish what his bloodline started: Lucifer’s complete annihilation.