In the Realm of Dark Souls.

The winding Nether River surrounded the entire realm like a magical band. Dozens of old Netherspirits charged out of the Realm of Dark Souls to examine the Nether River.

All of them were at the ninth or tenth grade, yet their withering life auras suggested that they were nearing the ends of their lives, like oil lamps that were on their last bit of oil.

The murky Nether River was originally filled with countless brilliant soul symbols. But now, ...