On the way back to St. Mayerde, Lambert has seen all kinds of tragic situations after being attacked by demon warriors, it seems that this kind of incident does not only happen in a few places, but in the entire continent of Arc, this sudden attack is undoubtedly a super killer move for humans that is enough to severely damage human beings psychologically.

Just imagine, if there are super powerful demon warriors anywhere on the Ark Continent anytime and anywhere, then how can you protect yourself, you can't never go out, in other words, you will be the one who will become a demon warrior next time? So how can you save your life?

"The causes of these attacks must be investigated as soon as possible, otherwise the consequences will be dire." Lambert said to Nicole and Leah.

After Lambert and the others returned to the Battle Academy, they hurried to the office of Mr. Jace, who had just returned from a meeting at St. Mayad's Castle, and the Ottoid Emperor Bloodhoof Owen had summoned him to investigate the cause of this series of attacks.

"You're back? Did it go well along the way? Jace pressed his temples, looking very tired.

Lambert approached Jace and asked him directly:

"Brother Jace, the ship we came back from Ernica just now also encountered the same attack as here, but the demon warriors there were all wiped out by a few of us, so the casualties were not large, but I have seen all kinds of tragedies on the way back... Do you know who did this? ”

Jace slowly turned his head and said with a wry smile at Lambert: "Just now His Majesty Bloodhoof Owen summoned a few of us to investigate this kind of incident, from the news that the Elnika and Dolores Empires used magic to send us that just now, there was an incident of humans mutating into demon warriors to attack civilians in the entire Ark continent, it is no accident, we dispatched the prophet David and the witch Zyra, they did not fully understand the situation, but they all came to a common conclusion, That is, these guys were not exactly human anymore before they became demon warriors. ”

"Not exactly human? What do you mean? Nicole, who was standing behind Lambert, hurriedly asked.

"From the analysis of the corpses of the demon warriors we brought back, these guys have actually been affected by some kind of toxin or element before they mutated, and part of his body has actually been eroded by demons, and the reason why he became demon warriors at the same time, I'm afraid that only the demon king Asmodeus will know, right?" Jace spread his hands and said helplessly.

"So what do we do next?" Leah asked Jace.

"Just now, His Majesty Bloodhoof Owen, His Majesty Enshir III, Lord Edwards, and President Erin have all come to the same conclusion, that is, the first priority is to stabilize the mentality of the civilians, if the atmosphere of fear has been permeating all the cities, then not to mention that the demons have killed us, we will first scare ourselves to death, so we unanimously discussed an unexpected incident to cover up the truth of this matter, of course, this is only temporary, and then the elite team composed of several of us will set off again, First go to the Warcraft side and ask them about their intention to cooperate, and then depending on the situation, go to the trouble of the demons, and now time is not on our side. Jace sighed, his face full of anxiety.

When Lambert heard Jace say that time was no longer on our side, his heart twitched again, and he remembered what happened when he found the witch Zyra before, the witch Zyra told him that if he wanted to use black magic to improve his strength, then he could go to her at any time, and now what the demons are doing is to declare that they are eager for a quick victory, if they can't raise their strength to the same level as Odin Teacher back then, then Alc Continent Lambert thinks that it will be absolutely impossible to hold it.

"Oh yes, good news for you." Seeing that Lambert was silent, Jace also quickly broke the quiet atmosphere and said to Lambert.

"Huh? What's the good news? Lambert asked, looking up at Jace.

"That is, General Fira's body has almost recovered, and he must be able to rejoin the battle in the near future, which is much faster than expected, so this can be said to be the best news for us humans, when General Fira and Geraint, Zyra, and President Erin join forces, even Asmodeus may have to weigh it, right?" Jace said to Lambert with a smile.

"How can it be so fast? I remember the last time I saw Sister Fira, her body was still very weak, how did she recover all at once? Lambert continued to ask, puzzled.

"This is thanks to Zyra, she is through some kind of secret magic of witch magic, Fira's body recovery speed has increased a lot, of course, Fila has also suffered a lot of sins for this, although I heard that General Fira's recovery process is very, very painful, it is a pain that normal people can't imagine at all, but when I saw her just now, her face was full of smiles, and she didn't experience severe pain at all." Jace smiled and continued.

"Because for Sister Fira, being able to fight is the best gift for her, even if she is willing to pay more for it, this is a pure demon hunter, and an example for each of us demon hunters." A smile finally appeared on Lambert's face, he was really happy for Sister Fira at this moment, because the lonely look on Fira when he mentioned that he was unable to participate in the battle due to injury was still deeply imprinted in Lambert's mind.

And now that Phila can participate in the war, then Asmode's pace of unifying the Alc continent will undoubtedly be slower, which will buy Lambert some time, after all, if it is not a last resort, Lambert will definitely try not to improve his strength through some abnormal means, because the risk is too great, and once it fails, it will have unbearable consequences.

However, Lambert decided to pay a visit to the witch Zyra, this time he wanted to find out what the dark magic was all about, even if he didn't use it at first, but he could learn it or understand how it worked, and when he had to, it would not be too late.

After deciding on this, Lambert quietly went to Zyra's residence in the palace of St. Mayède's palace that night.

Lambert made his way through a bunch of all sorts of strange things to Zyra's room.

"You're here?" Zyra was grooming in front of a magic mirror, and before she could turn her head, she already knew of Lambert's arrival.

"Well, Sister Zyra, I'm here." Lambert nodded, then said to Zyra.

"Looks like you've thought about it?" Zyra turned her head and asked Lambert with a smile on her face.

"Yes, I want to learn the black magic that will help me improve my strength quickly from Sister Zyra, and I hope Sister Zyra can teach me." Lambert said with a serious salute to Zyra.

"Okay, you come with me." Zyra beckoned to Lambert and motioned for Lambert to follow her to the other side.

Lambert followed Zyra, through several rooms, to a room that was pitch black.

Everything here is decorated and placed in a very strange way, in this room, whether it is plants or various items on the table, all of them are black, even the pets in this room, they are all black.

Just as Lambert was about to ask a question, Zyra began to explain directly to Lambert:

"This is a special room for me to study and study the dark arts, and the reason why everything here is black, as you can see, is because all of these things have been eroded by black magic, so what you see, everything is black."

"If I learn the dark arts, does that mean my body will be black?" Lambert scratched his head and asked Zyra with some curiosity.

"Theoretically, yes, but I've never applied black magic to humans, because you know that this thing is a forbidden art, and it's too harmful, and if you don't pay attention, it can cause irreparable danger. But the human body is inherently different from animals and plants, not to mention that the body of a demon hunter is far more powerful than that of ordinary humans, so if you use black magic on you, none of us know what will happen next. Zyra shook her head and smiled.

"Hmm... I'm mentally prepared for this, so just teach me this, please. Lambert said categorically to Zyra, since he chose to come here, then he had already thought about it.

"Is there anything I need to do to prepare?" Lambert then asked.

"You don't have to do anything," Zyra shook her head, and then went on to say to Lambert:

"You just need to stand here, and then I will guide the black magic to you, and then I will tell you a spell, when you want to use the black magic to improve your strength, you can directly refine the black magic in your body with the spell, and then you will be able to get what you want, of course, this black magic to improve the strength is not permanent, but temporary, after the battle, your strength will return to its original state." Zyra explained to Lambert.

"I see," Lambert nodded and suddenly realized, "It's so simple, so convenient, I thought I was going to learn some very difficult black magic from you, it seems that this thing is like some kind of device." ”

（......... ）