Unlike elemental summoning, spells that summon demons are much more rigorous. The most important of these is the name of the demon, followed by the circle that imprisons the demon in place, and then the passage between the two realms.

For thousands of years, all summoning techniques have been built on these three points, but for the mad mage Romuen West, the result was not what he wanted.

First of all, the name of the demon, no matter what the reason, can always be passed on to this world, especially after the chaotic era thousands of years ago, the name that can be passed down will only be fewer, and in this world, there are very few people who can completely destroy a demon, and as a result, the demons that are summoned are in fact always those over and over again. Some demons are so irritable with this incessant harassment that, once forcibly summoned, they do not want to say a word other than destroy the summoner or simply destroy themselves to return to hell in order to find peace for a hundred years, while others are purposeful and cunning, knowing their weaknesses for a long time with humans, and the price to pay for getting something useful from them is often terrible.

Romuen West's purpose in summoning demons is different. He disdains power from demons, and is only interested in them themselves, and the hell in which they live. He didn't want an enemy who would only scream angrily at him, and he didn't want to rack his brains to fight with each other for a trivial matter, so he researched another summoning technique on top of the teleportation spell.

"Rumor has it that this spell is actually a reference to an altar dedicated to the gods...... With the unscrupulousness of the mad mage, this is not impossible. ”

Laval's spirits seem to be better, presumably thanks to the abundance of power here. He brushed away the fine jewel-like grit and explained the runes to Ed.

"It's a trap, in fact. He said.

In Romuan's words, a rat trap. Put in enough bait to attract demons, open the way for them to pass, and wait.

At first, he got a bunch of all kinds of low-level demons who would only scream at him, and their only wish was to bite him, but after he adjusted the restrictions of the passage, he was lured to have high-level demons who could communicate with him, and there were indeed some, by the standards of demons, which could be called simple and easy to deceive.

Because they were not forced, these demons, even if they were also imprisoned, were much less humiliated and resentful, and were willing to talk to humans who were just as curious as they were. Romuan thus received a lot of news about Hell and even made a few demonic friends, and it is said that he even went around Hell alive under the guidance of these friends, and then returned to this world completely, leaving a rather vivid and detailed "travelogue", but it seems that it has not been preserved.

Ed remembered Romuan's notes about hell in the Enzhi Valley, and his eyebrows twitched slightly, but he didn't say a word.

The record of this summoning spell obtained by Laval is actually incomplete, so the final restored spell may not be exactly the same as Romuan's. It has stronger suppression against demons, but adds illusions to reduce their vigilance and resistance.

"I don't want to hurt them meaninglessly if I could. The old man said.

However, from the tone of his voice, Ed could tell that it was clearly just ...... A beautiful wish that could not be realized.

The priesthood has an almost instinctive aversion to demons, and even though Laval repeatedly emphasized that his purpose was to get more information, not more hatred, someone always moved uncontrollably. Moreover, in the decades-long incessant summoning, the rulers of hell may have sensed something, and the summoned demons are becoming more and more difficult to deal with. Upon discovering that they might have revealed more information than they had gotten, Laval decisively stopped summoning.

This place, in fact, has not been opened for almost a decade.

Ed was a little surprised. He felt the taste of the place...... It's still fresh.

"It reopened not long ago...... In order to find my whereabouts. Laval smiled wryly, "It's really not a glorious thing - in fact, I was taken here too...... A demon summoned by myself. ”

He was given the name of a high demon, a name that was said to be the ruler. The magic circles here can also be used in older ways, and are safer than before.

"It is capable of suppressing the power of summoned demons. "And having the demon's real name is a kind of oppression in itself, and with the heavy prohibitions here, I don't think there should be much danger." ”

He spent nearly a decade reorganizing what they had gotten to come up with a result that he couldn't accept. He desperately needed to confirm something, but because of this, he ignored whether the timing of the name was too subtle.

Ed suddenly felt a little uneasy.

"Who is it...... Tell you that name?" he asked in a low voice.

"Nia Meyer. Laval replied.

There seemed to be a dark shadow floating in front of me. Ed licked his dry lips, not knowing what to say.

Laval laughed at the guilt on his face.

"It's none of your business, kid. He said, "I knew him long before you were born." It was I myself who chose to believe him, even though I knew he was...... Demon. Or, it would be more appropriate to call him a half-demon, who is still partially human. ”

He believed in the part of the human race, and the name Nia had given him was not wrong, and he had even warned him that he might not be able to deal with this demon...... It was he who thought too highly of himself and failed to resist the temptation.

"The demon...... Is it Manisha?" Ed guessed.

Laval nodded: "That's not her real name...... But it was her. She did tell me something...... But do you know what's the worst?"

Ed's fingers clenched nervously.

"It's not that she's replaced me with an illusion, it's not that she's imprisoned me for so long, and how much news she's gotten from me," Laval sighed, "but ...... I couldn't get her out. ”

The chill crept over the body like frost. Ed swallowed dryly before he could speak: "So, she's ...... This world?"

He couldn't even help but glance left and right. He hadn't seen the demon, but he had heard Eren say that it was something that Nia called "Master...... Maybe it's also the culprit that made him the half-human and half-demon he is now. The danger of a demon that can make Nia Meyer have to succumb can be imagined.