```
"However, once you enter that black region, you need to be careful,"
"From time to time, monsters with strength comparable to that of official knights will emerge, and the deeper you go, the stronger the monsters become," Naya said with a serious expression.
Rein nodded in understanding.
Soon, they landed slowly at the boundary between the green and black areas, by which time Naya was already drenched in sweat.
"I can't fly in the black region, so from here, we'll head in that direction," Naya said, pointing toward a black mountain ahead.
"Alright, Miss Naya, you rest for a bit, and I will lead the way,"
Rein thought for a moment, took down his two-handed warhammer, and started walking forward.
The trees and flowers in the black region seemed as if they were painted with black lacquer, similar in shape to those in the green area, but with dark, ink-like colors on their surfaces. They also emitted a faint black mist, obscuring the view of the distance.