"Purposeful Soul-possession Technique"
The domain masters quickly wanted to use the power of the domain to stop whatever these four people were doing, but the formation movement was faster than the domain masters.
In an instant, the hand seal resonance created sharp knives in the air, and these knives decisively cut open a hole in the domain!
However, while cutting the domain, the knives also carved a tunnel for the four people.
All of this happened in less than a second, so fast that the domain masters had not even reacted when the four people had already rushed to the tunnel that they created!
Within seconds, their figures were swallowed by the dark, chaotic and abstract fourth void, leaving nothing behind.
It did look as if these people committed suicide or something, but they should have entered the tunnel that would lead them back to the main world!