Xen isn't your typical Hunter. In fact, he isn't human at all.

A dungeon raid orchestrated by the daughter of the Stormbringers Guildmaster goes tragically wrong, resulting in an unprecedented event—Xen, a rare mind-eating slime, absorbs a fallen Hunter's memories, granting him not only knowledge a monster should never possess but also access to the human class system.

The very system designed to help humans fight his kind.

Granted the unique [Shapeshifter] class, he can take on the forms of any living being he eats and also learn their skills. In a world where most Hunters are limited to a few skills, he alone can possess a seemingly unlimited number. Using this advantage, he will not only conquer the World Dungeon that spans between continents but also make use of his shapeshifting to infiltrate human society.

Despite being the enemy of both humans and monsters, nothing will stop Xen's rise to power. After all, the most dangerous of foes is the one that wears many faces—plays both sides—and reaps all the benefits.

What to expect:

Solo Leveling style world building, think modern day setting with portals leading to dungeons, and the existence of guilds.
An MC that starts as a dungeon slime who can shapeshift and devour the abilities of others.
Weak to strong, but fast-paced progression.