Du You's main body is fighting outside happily, and the World Will along with the beastman guardians have been keeping a close eye on him, fearing he might suddenly attack their world. One must understand that the attack from a ninth-tier strong person is no trivial matter.
If they don't defend, the world will suffer damage. But this person can't leave now, they know that they absolutely cannot match those many ninth-tier opponents. Only by protecting their own world can the other side dare not come in.
Thus, in their state of complete concentration, they naturally haven't noticed what's happening within the world.
In Du You's territory, above his main territory, a huge Light Ball is emitting light. This is indicative of the territory advancing in tier. The surrounding beastmen are ignoring this phenomenon because they are all the branch of the armed forces created by Du You.
As for the beastmen outside, they can sense it but simply pretend it's not there.
