Nataya and Lunna were not unreasonable women. With their outstanding family backgrounds and the many places they had traveled with Saine in recent years, their horizons and judgment had steadily improved day by day.
For a special situation to be valued so highly by Nataya and Lunna—and to require Saine to investigate with them—it could not possibly be a trivial matter.
After leaving his temporary laboratory with the two women, Saine's group continued flying east.
More than half a year of adventures in the Underground World had gradually accustomed Nataya and Lunna to the dark environment.
Indeed, because they had gone out to fight far more often than Saine, their understanding of the surrounding region was beyond comparison with that of a shut-in like him, who had spent months cooped up in his laboratory.
The two women's war Task Points had also accumulated into a considerable sum during this time.
They only had to return to the Surface World for the Fortress Headquarters database to update them in real time.
After traveling eastward for three days, the maze-like underground caverns they passed through left even Saine, who had been holed up in his laboratory for several months, slightly speechless.
Who knew how much of the surrounding region Nataya and Lunna had covered, or how many combat-capable Alien Plane natives they had slain, while Saine had been immersed in his experiments?
In the end, Nataya and Lunna brought Saine to the bank of a Magma River beside a Volcano Crater deep underground.
The elevation here had likely reached nearly twenty thousand meters beneath the ground.
Oppressively hot air filled the surroundings, carrying a foul stench of sulfur.
Black substances bobbed and drifted amid the crimson Magma River.
These black substances were special metals refined by the Magma River, among the highest-quality