The key thing is, these battles between living beings are a bit too abstract, hard to comprehend...
Instead of calling them battles, they're more like various types of natural disasters clashing with each other.
Like a tornado colliding with a volcanic eruption...
No people can be seen, just all sorts of "special effects."
However, Colin did notice something, that these individuals didn't seem like they were about to take down "Hunger" anytime soon.
Moreover, the intensity of the fight appeared to keep escalating.
He had no desire to become the first "Flamebearer" Reservist in history to die from "watching the spectacle."
That would be too much fun.
So he wasn't planning to stay much longer and would leave once it felt about right...
However...
At the same time, deep beneath the surface of "World Code-13," a human-shaped figure transformed by the "King of Madness" pressed his ear against the wall at its edge, listening for noise returning from the outside.