Like these rune lifeforms, they have evolved over incredibly long ages. From the very beginning, they were just the simplest and most primitive form of life, accumulating bit by bit, then, through endless ages of accumulation, they finally grew to become a truly supreme being.
If this entire process is calculated in human time, it would take at least hundreds of millions of years!
Such a long time to grow, then, they must also be careful of the devouring from their kind. In their dimension, the most terrifying threat does not come from outside enemies but from those of the same kind beside them!
All rune lifeforms appear almost indistinguishable.
That kind of supreme existence is no different in appearance from those simple lifeforms, so if one is not careful, they might encounter a giant and then be devoured and refined by it entirely.
This young man also gained today's ability by devouring countless rune lifeforms.
