When Leon heard that, he noticed that it did make sense. Skeletons could have their equipment inside the dungeon, but outside, they had to absorb some mana for them to create those. Considering that they could destroy airplanes in just a few moments and even match their speed… it was evident that they were way too powerful, considering that they only appeared in a world that just obtained mana. Still… Leon was a bit worried about the term 'first stage'… it looked like dragons could evolve into something more fearsome.
"Well, that does make sense… the dragons I saw were only beasts that craved for destruction. They weren't that smart, but if they become smart like humans… is that dragonnewt an evolved dragon or son of one?"
That was probably the case, that guy transported Leon to another world instead of getting rid of him. Considering his behavior, it was because he couldn't, nor because he didn't want it. That means the dragonnewt could only act in that world under some restrictions… while the harvesters couldn't. As for why Leon had no idea… but he was pretty sure that guy was supposed to be way stronger than the harvesters.
"I agree with you; it doesn't make sense that dragons appear in worlds like ours so soon," Leon said. "But considering what you said, are you implying that dungeons are supposed to appear naturally in every world?"
"Yes, planets aren't sentient beings. So it makes sense that earthquakes that create dungeons are natural phenomena. " Gurr explained. "The planets adapt itself to the energy know as mana, but since it is a very powerful source of energy, it can react in unexpected ways when it isn't under the control of anyone. We still don't know how, but we already know that mana can move things and people over long distances, you are living proof of that."
"Yeah… so you are saying that mana in the worlds can create places like wormholes and connect distant worlds?" Leon frowned. "That is crazy, but…"
In the end, Leon still only has a small amount of knowledge about mana… it was unbelievable, but considering that he knew the existence of things that could bend time and space, it wouldn't be weird that mana could create a secure version of that. While Leon was trying to understand the logic behind that, he noticed something… he was a magician, and he used mana to do everything… wasn't he part of the problem? He used his energy to create many things, but he knew that once he uses mana, the energy wouldn't be destroyed, it would only change its nature. Leon himself was accelerating the process of evolution and if evolution was the appearance of things like harvesters… then that wasn't a good thing.
"It seems you finally noticed…" Gurr said. "Magicians like you fill the world with mana and make the planets become even more connected to the system. To put in simple terms… you are creating the terrain to let even more powerful creatures invade your world."
Leon felt like his head was about to explode. That was too much information for a single day… and the fact that his actions somewhat could cause the doom of Earth wasn't helping. Still, Leon had no reason to believe in the words of a stranger. However, it did make sense. It would explain why Gurr didn't like him, and it would explain why the dragonnewt couldn't kill him…
"A fish can't live outside the sea… but if he finds a way to expand the sea, he won't have to leave the sea." Leon said.
"That's a pretty accurate analogy of the situation…" Gurr looked at Leon with stern eyes. "That's right, even if you are powerful, you couldn't show your strength in a world that can't support your strength. Mana also increases the life and endurance of the worlds, after all."
Leon bit his lips until it started to bleed… if he only had noticed that mana was way too convenient sooner, he could have prevented a lot of problems Earth will face. He spread the knowledge of how to use mana, and thanks to that, the people of Earth would accelerate the evolution progress of the planet. The human race survived the first years of assimilation, but it looked like things would become even more complicated in a few years if they don't stop using mana.
"So, the only option is to stop using mana, right?" Leon asked. "I guess sealing dungeons is also an option."
"Yes, but as you can imagine, it is impossible to stop the greed of sentient beings," Gurr said. "It is almost impossible to stop the evolution process… but it can be delayed until the race of the planets grows in physical strength and in numbers too. Although people also consume mana when they grow strong, the amount of energy used is small. As for the monsters' corpses, all their energy is consumed by the planet."
"Shit… how many years ago the harvesters appeared?" Leon asked. "Did something else happen?"
"They appeared twenty years ago. At the same time, the dungeons evolved, and new ones appeared." Gurr said. "It was around the time the people above started to teach telekinesis even to kids."
Leon had no idea how many people lived in Miebos, so it was hard to know if the Earth had more or less than forty years before the harvesters could appear. By the look of things, considering that dungeons could evolve and new ones could appear, it looked like soon using mana to survive wouldn't be an option, would be a necessity, and that only would give the chances to more powerful creatures invade Earth. Leon couldn't let that happen by any means necessary, because if the world gets destroyed and the human race is decimated, he would be the cause.