No one knows when the Tower of Trials first appeared on Earth, but it had been there for a long time.

Its existence was as natural as a law of physics. No one questioned why the tower was there or its purpose. The same went for the beasts born exclusively within its confines.

It was much like how people rarely question why humans exist or how plants and animals came to be.

Like gravity, it was simply one of the world's countless rules.

This didn’t change even when Earth became a subordinate of the Galactic Empire.

The intelligent beings within …