"W-What was that?!!" asked a dwarf in confusion.
"T-That's…" replied another dwarf.
The same situation happens to all the dwarves in the area. They clearly felt strong energy passing through in a split second but couldn't catch a glimpse. However, one thing is sure this fast attack has an extensive range until it leaves their perception.
In other words, this fast attack keeps going without end. The most surprising thing is that most people here are at least fifth-grade strong combatants. Their perception could reach at least dozens of kilometers wide though it is not precise.
Still, it means the monster attack could reach more than a hundred kilometers or more, making them fear it. In fact, the last monster attack [Dark Phenomenon] passed to the outer wall of Undermine Council, which should be at least a thousand kilometers from here.
