The world did not end when another reality began to invade it.
It adapted.
After the Fusion, Extradimensional Radiation spread through everything—cities, creatures, plants, and even the deepest minerals. For most, it meant mutation, mental collapse, and the loss of humanity. For a rare few, it became a source of power—if they could control it.
Flow Zones fractured the planet. Realms and Grades came to define the limits of existence. Flow Cores became the fragile line between evolution and madness.
Cael grew up believing he was nothing more than another orphan in a broken world. What he never knew was that, as a child, he had been subjected to illegal experiments, leaving something incomplete inside him—a Core that should never have existed.
When Cael performs the Universal Stabilization Technique, distributed by the government to identify new cultivators, his awakening fails… yet something answers. His Core does not form like others.
It echoes, resonating at the boundary between realities.
As governments, cultivation schools, and hidden forces fight to control Extradimensional Radiation, Cael is forced onto an unstable path: the Liminal Path—where borders are not walls, but thresholds.
In a world where advancing too far means losing one's humanity, Cael seeks what is considered impossible: a state of stability that does not require collapse.
If he fails, he will become just another echo consumed by the radiation.
If he succeeds… he may be forced to rewrite the rules of the world itself.