A strange young man wakes up in a world that does not belong to him...
In the heart of an ancient forest on a continent where no humans live.
Without understanding what happened, and with no clear way back, he finds himself forced to adapt to a harsh environment ruled by intelligent creatures, including humans.
Along with him is a mysterious entity called Sera, who takes the form of a human and possesses knowledge beyond what he reveals. He helps him understand the basics of this world...step by step.
As time passes, the young man begins to learn to fight, learn about the world, and discover new powers.
But as he delves deeper, he realizes that This world is not just a land full of monsters... but a world that carries a history that is older and more complicated than it seems.

**This volume may contain spoilers. I will introduce world geography, some terminology, the power structure, and so on, and all of this will be covered in the story**


[Definition of the world]