"But it still doesn't seem like enough."
Lucifer looked toward the ocean beneath the floating islands. Fierce winds swept across the sea, whipping up waves over ten meters high. Such conditions would have been deadly to ordinary people, but to Lucifer, who had witnessed the strength of Advanced Professionals firsthand, this danger was nowhere near enough to threaten adventurers.
This level of danger was nowhere near enough to endanger adventurers.
"I'll have to spice things up!"
As he spoke, Lucifer began making modifications based on the various magic arrays left by mages in his memory archive. Using the ten floating islands as a foundation, he created a colossal thunderstorm magic array.
The instant the magic array took shape, the thunderstorm that had shrouded the entire first half of the Tenth Layer suddenly stopped, then grew even more violent. Centered on the ten floating islands, it became a colossal thunderstorm that enveloped more than half the Tenth Layer.
The rapidly spinning thunderstorm acted like a colossal extractor of elements and mana, drawing in every kind of mana and element from the Tenth Layer at a frantic pace. In moments, endless thunderstorms blanketed the entire ocean, and the storms raging across its surface grew even stronger.
As time passed, tornadoes connecting the sea to the sky even began appearing over the water. They swept immeasurable quantities of seawater into the heavens, eventually transforming into lightning tornadoes under the influence of the thunderbolts.
"Now that's more like it. If you want to get through the first half of the Tenth Layer safely, you'd better find a way onto those floating islands."
Lucifer was no monster. He had deliberately left future adventurers entering the Tenth Layer a single way to cross the Storm Ocean: climb onto the highest floating island, defeat the floor boss