"Nero, don't!" I shouted at Nero when I saw him moving toward the door. I have warned him about doing that, but he still did not listen to me.

  Just as the five of them walked inside the door, Nero also sneaked inside.

  He should not have done this; it is an extremly risky thing to do. Even though his stealth method is unparalleled, there is a high Grandmaster there. If it discovered Nero, I didn't even dare to think about the consequence.

  Hun!

  As Nero sneaked through the door, our link went completely blank. I could not sense even the slightest thing from him, which instantly scared the shit out of me.

  Our link is quite strong and enforced with the rule-bending power that Nero is made. Some powerful formation might be able to silence the link between Ashlyn and me, will not be able to do the same with my link with Ashlyn.

  I was thinking of the worse when suddenly, the link came back, and I got a complete view of what Nero was seeing.

  "Nero, are you fine?" I asked immediately, "I am a fine father, its just the death and metallic energy in this place is quite strong," He replied.

  The place he is at is a big hall that is cracked and broken in many places, but its condition is still ten times better than the building outside.

  There is no mist or any type of energy that could be seen, but energies are not visible. Through Nero's senses, I could feel how dense the metallic and death energy is.

  Even the peak Grimm Grandmasters seemed to be struggling against it before they took out the artifacts which have covered their whole body, like the artifact of the old Foxman did. It had activated it the moment the door had opened.

  The five Grandmasters walked toward the three doors; they were not as ostentatious as the door outside, but they all looked well fortified. Only one of them had formation visible on it, while the other two were in perfect condition.

  The Bullman and old Foxman talked, discussing while looking at the door; they were talking softly, and their conversation was protected that even the other three Grimm Monsters were not able to hear what they were saying, much less Nero, who was behind them.

  It seems like what they are searching for is too precious; that they are not telling even peak Grandmasters beside them.

  The peak Grandmasters are top powerhouses on both sides; even Grand Lords would not deny their requests if it is not excessive, but here they seemed to be completely dark about the mission.

  They discussed for a few minutes before they decided on the left door, and Bullman took out the round key and placed it on the hole which seemed to be specifically made for it. As it was placed, the door shone for a moment before opening with a click.

  "Don't worry, father, they will not discover me," Nero and followed behind. This time too, I had asked him to listen, but he did not.

  This time, I am a little less worried about him being discovered; they are the place where the energies are very dense, so dense that even peak Grandmaster felt suffocated in it. For others, it might be uncomfortable, even dangerous; for Nero, it is not.

  On top of that, it was the best stealth environment he could find; he had already turned himself invisible, and now he emitting the same aura of energy. It is copying it so perfectly that even I might not be able to discover him without using a heavy dose of rule-bending power.

  Gasp!

  This time, the link did not cut off even for a moment, and I got a clear look at what it is inside it, and it couldn't make me gasp.

  These are the rooms made of energy, and on them are dense formations; more than half of the rooms are broken, but some of them are still standing and have goods within them; seeing those, my eyes couldn't help but light up like a torch.

  80% of the rooms are empty, but the rest, 20% are with goods; some are filled with while others barely have a fistful of everything, but seeing things that are contained inside it, even a small fistful would be more than enough.

  "We are here for five things; these are the list," said the Bullman finally, and the projection of five things appeared from its bracelets.

  Seeing the projection, my eyes couldn't help but widen up in a shock, but at the same time, confusion appeared on them.

  I know all the five things; even three peak Grimm Grandmasters did not all of them by their expressions and questions they have asked.

  Of the five things, two are very precious, even more precious than the Fire Dust Rose, but the other three things are extremly rare but they are not precious. There is barely any use for those things.

  Which made me believe that the Grimms need these resources for a specific purpose, likely to create any alchemical compound. The three Grimms asked questions about their purpose, but all they got was a blank look from the Bullman.

  "We want these things in huge quantity; if any of you guys are able to find large storage of it, there will be a huge reward for you guys back home, better than what we have here," the Bullman said.

  It couldn't help but shock the three Grimm Monsters, as, at their level, there is no way the Bullman could lie to them, and that means these things are much more important than they throught.

  Suddenly Frogman's eyes lit up as if it had understood something.

  "Are these things fo" It hadn't finished speaking when suddenly the Bullman gripped its neck at lighting fast speed.

  "You should know better than speak about it, Udaxr." Warned the Bullman while radiating a horrific amount of killing intent that nearly made Nero break his stealth ability when Bullman let go of the Frogman's neck and turned off its horrific killing intent.