A Simple and Easy to Understand Description

Leaving the army to wait, Roy and Lilith spread their wings and flew to the center of the magma sea.

The magma sea, which covered an area of nearly ten thousand square kilometers, was quite huge. Although they didn't deliberately increase their flying speed, it wasn't until half an hour later that Roy and Lilith finally approached the center of the sea.

While flying over, Roy noticed some scattered islands on the magma sea. They were black islands formed by the cooled lava exposed on the surface of the sea and had stabilized in the constantly surging magma sea. The foundation of these islands was very solid, so the Hell demons had built forging workshops on these islands. Roy could see workshop-like forging tools on them. These were all places where demons used high-temperature lava to forge weapons.