Outside Billy City, whether it is the forest or the grass, there is a scent of death and blackness. Many plants have begun to decline and wither. Even in the sun, it gives people a feeling of death. All living animals and insects have left here, leaving only some monsters of different sizes.

Obviously, the impact of the demonized barrier not only stays inside the barrier, but also outside the barrier will be subject to a certain degree of radiation pollution.

In the sun, Oz dripped some pollutant source onto the stone. The stones that were exposed to the pollutant source quickly changed from gray to black. However, before the pollutant source spread to the entire stone, the sunlight had already passed through the treetops and shone onto the pollutant source. In the sunlight, the pollutant source turned into a burst of black smoke and dissipated in the air, leaving only the black marks on the stone, proving that everything that happened before was not an illusion.

"It should be said that it is indeed as expected?" Oz observed the contaminated parts on the stone. In the sun, the contaminated parts looked like a scar, and it felt no different from ordinary stones when touched with his hands.

"You use too little, Lord Demon." Mona lazily lay on Oz's shoulder, "This little pollution source material is not enough to pollute the environment."

"You guy, since you don't want to walk, why are you here?" Oz glanced at the white creature on his shoulder.

"As the assistant of Lord Demon King, how can you easily leave Lord Demon King?"

"Then you're going to come down and leave!"

"Mr. Demon King, do you have the heart to let me follow you and eat dust?" Mona said pitifully.

"Forget it. Let's continue on the road. Go find some living ordinary animals." Oz looked up at the sky, and the bright sunshine looked a little dazzling.

In order to find a suitable experimental animal, Oz took Mona and ran ten kilometers away, and finally caught some small animals. After experimenting on the organisms, Oz found that the infection effect of the pollutant source substance was as good as expected, but the lethality was worse than originally expected.

"It has extremely penetrating properties, which can destroy the magic resistance of creatures, but... it will not kill directly!" Oz flew in the air, watching a wild boar running around the forest as if crazy, and from time to time, he would use his head to hit trees or stones.

The wild boar had several drops of contaminated source material dripped by Oz. Although the contaminated source material has been purified by the sun, the scars remaining on the wild boar's body still exist! A large piece of skin on the wild boar's back had completely necrotic and turned into a dark matter similar to a monster.

"Although it won't kill directly, it will completely transform the creatures in the direction of monsters..." Oz took out his notebook and recorded, "It's really something more dangerous than originally expected."

"My devil, what's the point of recording these?" Mona asked lying on Oz's shoulder.

"Isn't it natural for unknown magic materials to be measured through various means?" Oz wrote in his notebook, "I'm still a magician no matter what I say." In a sense, polluting source substance is also a very powerful magic material. Although it is not yet possible to see what other uses this magic material can be used as a poison.

"Is the magician's desire for knowledge?" Mona's mood was a little depressed. "This kind of thing doesn't feel very consistent with the Demon King."

"Don't you often say that the Demon King should be loyal to his own **?" Oz put away Bi Technology, "I am completely loyal to my curiosity now."

"Well..." Mona looked at the wild boar running in pain below, "If it were just 'looking at the subject', it would be very consistent with the image of the Demon King."

Oz looked at the crazy wild boar in the forest below, and suddenly there was no more experiments on it.

At this moment, a noisy orc speech suddenly came from the forest!

"Osa!"

"Damn it! What's going on with this wild boar??"

"No! This wild boar is completely aimed at us!"

"Damn it! It's all this pig, we have been discovered by that magician!"

...

Oz stared at the bottom and narrowed his eyes: "Orc?"

In the forest, an orc who was originally hiding in the bushes was knocked out from the hidden position by a crazy wild boar. This sudden situation not only exposed the hiding orc, but also several other orcs were exposed.

There were not many orcs, about ten people, all of which were all fanged orcs with simple equipment and seemed to be just ordinary beast soldiers.

Seeing the group of orcs suddenly appear, Oz slowly continued to rise a little higher, and then began to prepare for magic calmly.

"No! That magician has started casting spells!"

"Don't worry about that pig, everyone runs away!"

Captain Orcs roared, and all the orcs fled in all directions.

Because of the language barrier, Oz finally realized that the orcs were ready to escape until the orcs had already begun to flee.

After realizing this, Oz did not hesitate to throw the magic that had just been ready in his hand at the orc who looked like the captain!

"Wind Blade Dance!" Dozens of wind blades tore the orc captain and another orc who was close to the distance to pieces. During this delay, the other orcs had already escaped in all directions.

"Everything ran away, Lord Demon." Mona looked disappointed.

Oz glanced at the orcs who were running away in all directions and did not continue to pursue them. Instead, he used his mental power to sense the situation around him. After confirming that there was no ambush, Oz slowly landed from the sky.

"My devil, don't we chase those escaped mice?"

"It doesn't make any sense to catch up with it anyway." Oz walked to the orc warrior's corpse and was about to start drawing their souls.

The substance with a faint magical glory was extracted from the corpse by Oz, forming a crystal-like thing in Oz's hands. Then Oz forced into the soul in his hand and checked their memories.

"Sure enough, these orcs are scouts. In addition to them, there are many other orc reconnaissance teams nearby." Oz's mental power retreated from his soul.

"Master Demon King, then what are we going to do next?" Mona asked, looking up, "Do you want to clean up the orc scouts nearby?"

"Just leave this kind of thing to the monsters to deal with." Oz glanced at Mona angrily, "What do you think the existence of those monsters is for?"

"But if the monsters run around, they will probably not come back after leaving... By the way!" Mona knocked on her head and said cutely, "I'm very sorry, Lord Demon, Mona, I forgot that there are those beast-eared ladies!"

Oz: "......... Wait until night, let the beast-eared girls take monsters out to clear out orc spies near the city. By the way, they can also practice their level."

"Abide by the order! Lord Demon King, I'll make arrangements now."

"Well... wait a moment." Oz thought for a while, "I'd better go back to the Demon Realm. I'd like to see how you plan to make arrangements." Oz is very experienced about Mona's unreliability, so Oz plans to see what Mona will do - by the way, get familiar with the beast-eared ladies.

When Mona heard Oz's words, he was a little surprised: "Huh? Lord Demon King, are you going back now?"

"Go back." Oz took a photo of the notebook in his bag. "Anyway, the necessary information has been obtained, and the others will be studied slowly in the future."

"Mr. Demon King, don't you plan to continue to appreciate the painful expression when other creatures were tortured?"

"Please don't say others like a sadist!" Oz couldn't help but complain.

"The devil is all arrogant and sadist!" Mona raised her thumbs up at Oz, "This is a common principle in any dimension!"

Oz: "…I always feel tired when talking to you…"

"If you are tired, just ask the maids to replenish your magic." Mona raised her thumbs up at Oz.

"Go back..."
Chapter completed!