The war in the mortal world slowly fell into a strange state.
On the main battlefield, faced with the Great Wall Defense Line that humanity had built and maintained over countless years, the orc army could do nothing even with divine magic to aid them.
The Great Wall's ramparts were both tall and thick, reinforced throughout with spells. Ordinary blades could leave only a faint mark, and even that would vanish after a while. The walls were not simply joined into one continuous stretch; they followed the earth veins in uneven lines. This formed many winding barbican structures. Anyone trying to charge in along the roads would be trapped inside those barbicans and attacked from several sides, easily suffering total annihilation.
Therefore, to assault this line of defense, they had to—and could only—rely on siege equipment such as ladders to climb the walls.
Yet when it came to siege engines, the orcs' technology was truly too miserable to look at. After all these years, they still had not invented anything particularly effective—there had simply been no need. Orcs themselves had no habit of building tall, thick walls, and likewise no habit of besieging cities. Besides, even when faced with towering, precipitous walls, didn't they have flying magical beasts and mid- to high-ranking experts?
But against the Great Wall Defense Line, flying magical beasts were useless, and mid- to high-ranking experts were equally useless.
Humans had flying forces too, and in great numbers. Perhaps their total was smaller than the orcs', but for defense alone, it was more than enough.
As for the number of experts, humanity held an absolute advantage. In the previous great battle, the clash between the legendary experts of both sides had ultimately ended with the orcs retreating in defeat. Unfortunately, that battle had dragged on for