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System of the Beast Slayer: A LitRPG Adventure (Volume 8)

by CaffeinatedTales

Language: English

Published: 2026-08-27. 146,320 Words.

Categories: Fiction » Fantasy » Dark

Content Rating: Older than 13

Roy survived a second Trial of the Grasses.

He should have died. Instead, the mutation pushed his body beyond ordinary Witcher limits, unlocked a new stage of power, and revealed a brutal truth: becoming stronger from here will demand rarer mutagens, deadlier monsters, and risks no sane hunter would accept.

Roy has no intention of stopping.

The Brotherhood of Witchers is finally becoming more than a refuge for survivors. Its first young apprentice is ready to face the Trial. Lost Griffin School secrets are returning to the light. Mutated Signs, enhanced weapons, forbidden alchemy, and a path toward Advanced Witcher power promise the kind of growth Roy has been chasing since the beginning.

But every breakthrough opens the door to something worse.

A trail of mutilated victims leads toward a predator far beyond ordinary monsters. A Higher Vampire hunts from the shadows, fast enough to turn a single mistake into death. To bring it down, Roy must combine his leveling system, Witcher Signs, enchanted weapons, battlefield control, and every hidden ability he has gained.

And that is only the beginning.

Buried beneath forgotten ruins lies an abandoned laboratory built around an impossible dream: reverse the Witcher mutation. The experiment failed. What it created instead may be far more valuable—and far more dangerous. Secondary Mutation could transform the Brotherhood into something the Continent has never faced before.

Then the trail leads to Jérôme Moreau, a lost Griffin Witcher who survived decades of imprisonment, betrayal, and ruin.

He has one question left.

What happened to Kaer Siren?

For readers who love progression fantasy, LitRPG-style power growth, monster hunting, dark fantasy, evolving skills, forbidden experiments, and lethal boss battles, Roy’s next stage of evolution has begun.

How much humanity can a Witcher sacrifice before power becomes another kind of monster?


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