The secondary defense subsystem world.
The large-scale war alarm system was spread out all over the world, dying the sky in crimson light.
Because the entire world was in a state of war, the sound of the alarm hadn't stopped even once.
Despite this sound being an ear-piercingly high-pitched and loud, it was being overshadowed by a smaller but more constant sound of chewing.
It was the sound of the monsters chewing everything they could.
The Desolate monsters were slowly but surely advancing forward.
Over 2/3rd of the world had already fallen, the only place left still standing was the core defense point of this world.
This was a hard and slow battle.
Fortunately for the Desolate monsters, they had ample experience with wars like this. They would alternate between attack and defense, calmly and orderly coordinating organized attacks without appearing impatient.
