It was hard to accomplish such a feat, pretty impossible in the eyes of the experienced masters. It wasn't just the issue of knowing each other's techniques, nor the problem of developing a grand technique out of theirs, but it was the problem of them synchronising their powers at the same tune, pouring out the same level of power at the same time, without messing it up.
It was pretty impossible, but to William it was nothing. He was the one in control of all this, and he knew how to control everything perfectly fine.
Not to mention everything was related to him, and that meant he was fighting like he was fighting with his clones or something.
The explosions that landed out there made everyone focus more on that area, even monsters stopped coming, stopped running towards them, and focused on such terrifying force.
It was expected they felt a weird fear down their spirits, one that would emerge when an ant met a god. "Don't slack! Move, hit them hard! Use the chance to kill more!"
