Rioshi Takeda, 18, is a boy invisible to the world. Silent, emotionless, detached — he lives with a deep void inside him, without name or reason. It’s not that he rejects emotions… they simply never come to him.

One full-moon night, his entire class is mysteriously transported to another world — a realm torn apart by chaos, plagued by monsters and calamities. While his classmates appear in a royal welcome hall, Rioshi, who was late, finds himself alone, cast into the heart of a wild forest with no explanation.

What he doesn’t know yet… is that this world is on the brink of collapse.

To save it, the gods created a unique power — unlike anything ever seen: The Évolis. A living, intelligent system that adapts to its bearer. It doesn’t grant strength — it helps it grow.

Rioshi is the chosen one of the Évolis.