Since the guards who were wiped out have been found, it means that the Lost Research Institute is not far away.

"These people...... You killed them?"

"Yes, yes......"

Facing Rocky's cold gaze, Al quickly lowered his head, not daring to look directly at him.

"How many people you killed, remember?"

"This ......"

Al was stunned when asked about this kind of thing, he really didn't remember how many guards he had killed in order to kill him, because at that time he just wanted to keep the secret of the institute, so he killed everyone he couldn't trust.

"Think about it for me!"

Seeing that Al couldn't answer for a long time, Rocky yelled at him, making Al tremble.

"Big, adult, it should be eight people......"

"Eight people, but there are only five corpses here. ”

Rocky looked at the corpses on the ground as he spoke, and as he said, there were only five corpses here, so if Al remembered correctly, it meant that there were three corpses missing!

Hearing him say this, Al also looked at the corpses on the ground, and found that there were indeed a few fewer than when he left, and this discovery made his face turn pale in an instant, and hurriedly looked at Rocky:

"It's a demon, my lord, it must have been a demon who ate the corpse!"

"Well...... There is a possibility ...... this."

This time, instead of retorting to Al, Rocky nodded.

Although he had never seen a demon with his own eyes, don't forget that the original Rocky was a serious nobleman and highly educated, so he knew some about demons through the records of books.

One of the things that he remembered the most was that according to the book, demons were cannibals!

This is not a rumor, but a fact written in a textbook, so there should be no mistake, and if the demon really eats people, then it means that there is indeed a demon in the vicinity!

"My lord, I—let's go...... If there's a demon here, it's too dangerous......"

Thinking that it was possible to encounter the demon again, Al was frightened, although he had encountered the demon once before, but at that time there were thirty guards around him, and it was precisely because of the strength of the people that they were able to successfully escape under the attack of the demon, but even so, more than a dozen people died.

Moreover...... Al only encountered one demon last time!

Just one demon sent thirty armed and trained guards to flee!

So when Al found out that the demon was still nearby, he collapsed directly, and now there are only two people between him and Rocky, Rocky has the empty demon armor to rely on, but he has become a cripple, so once he encounters the demon, he will definitely die!

But how could Rocky listen to him, he didn't even bother to answer and went on, and as soon as he left, the frightened Al hurried to follow, not daring to stay here alone.

In this way, the two walked nearly a hundred meters into the forest, and then found the body on the ground again.

Just like just now, there were also many corpses of guards lying on the ground, but this time there were obvious traces of battle, and some of the corpses were simply torn apart, and the scene was very miserable.

"That's where you were attacked by demons?"

This time there was no need for Al to explain, and Rocky knew what was going on.

"Yes, that's where we were attacked, Institute...... The gate to the institute is behind that boulder......"

Nodding, Al pointed with his hand to a boulder in the distance.

Looking in the direction of his finger, Rocky saw a boulder not far away, this boulder was so big that it was like a hill, standing very conspicuously in the forest.

Finally found it!

Seeing this boulder, Rocky couldn't hide his excitement, grabbed El and took off into the air, and flew straight over.

A moment later, he landed firmly in front of the boulder, and sure enough, he saw a large door in the stone wall!

Looks like Al really didn't lie to him! There's really a Lost Institute here!

With Al aside, Rocky walked quickly to the stone door, where he noticed a pattern still printed on the heavy door.

"It's ......"

Sweeping away all the dust from the stone door, the pattern on the stone door reveals its true face, and it looks like a badge......

"It's like ...... It seems to be the national emblem...... Where should I have seen ......"

At this time, the memories of the past came into play, and the previous Rocky may have been a cowardly character, but he loved to read, and had read a lot of books of all kinds, so the pattern on the stone door could not help but make him feel familiar, as if he had seen it in that book.

"I remember! This is the national emblem of Cohen!"

After thinking about it carefully, he remembered that he had indeed seen this pattern in a book about the history of the Land Era, which was the national emblem of the Kingdom of Cohen!

The Kingdom of Cohen was a huge country in the Land Era, with a huge territory and strong military strength and experience, which could be regarded as one of the great powers of the time.

This kind of great power was a well-deserved main force during the War of Resistance, so many research institutes were established to develop new weapons and equipment, and it seems that this research institute in front of him was the research institute of Cohen Country back then.

"You're waiting for me here. ”

After confirming that this was the research institute left behind by Cohen, Rocky glanced back at Al, apparently intending to enter the institute alone.

"Don't, don't leave me here!

However, when Al heard this, he was in a hurry, how dare he stay in this place alone!

But Rocky ignored his pleas and pushed the stone door open with his hand.

"Huh?"

Putting his hand on the stone door and pushing hard, Rocky felt as if he was pushing a mountain, and the stone door did not move at all.

Immediately after that, he put his hands on the stone door at the same time, and exerted his force violently, but still did not push the stone door open.

"What's going on......"

This result made him frown, you must know that the blessing of the Sky Demon Battle Armor has allowed him to reach the level of a fourth-level warrior, which can be said to be far beyond the average person, how can he not be able to open this stone door at all?

"There must be a mechanism!"

After a while, it dawned on him that the reason why this stone gate could not be opened by brute force meant that there must be a mechanism.

Thinking of this, he began to look around.

But when he touched the stone door up and down, and even walked around the boulder twice, he found that there was no mechanism at all.

"What can I do......

"Hmph, think slowly......"

And Al on the side saw that Rocky was blocked, and he sneered in his heart.

He had also tried to open the stone door when he found it, but all attempts had failed, so he knew that Rocky would definitely not be able to do it.

It's best if you can't open it so that you don't have to stay here alone, Al gloated.

"Oh yes!

But while Al was gloating, Rocky suddenly patted his head and finally thought of something.

Then I saw him press his hand on the coat of arms of the country of Cohen, and at the same time mobilize the magic power in his body to rush to the stone gate.

After that, I heard a loud bang, and the stone door in front of me began to vibrate violently, and then slowly opened!

It's done!

Watching the stone door slowly open, Rocky breathed a sigh of relief, looked back at Al with a confused face, and walked into the stone gate with a slight smile.

"Wait for me, take me with you!"

Seeing that Rocky had really opened the stone door and had really left himself alone, Al hurriedly rushed over.

It's a pity that he is a cripple now, his legs and feet are not good, and the stone door slowly closed before he could run two steps......

Ignoring how Al was crying and calling his mother when he was left outside, Rocky walked through the stone gate and found that there was a tunnel that led underground, and it seemed that the institute was built underground.

This is a very smart approach, otherwise with the strength of the demon, if the research institute is built on the ground, it will undoubtedly be easily destroyed, but it is not the same if it is built underground.

"I hope I can really find something this time......"

Taking a deep breath, Rocky walked towards the depths of the tunnel with a hint of anticipation.

But he had barely taken two steps when a light appeared in front of him, and all the magic lights on the tunnel walls were lit up at this time!

"Here...... There's even magic power here?!"

Looking at the magic lamp that illuminated the tunnel, Rocky was a little surprised, this institute has existed for almost a hundred years, how can there be a reserve of magic energy?

It's magical.

It's no wonder that the city lords of those large Sky Cities are willing to spend a lot of money to buy the coordinates of the Lost Research Institute, this place is indeed very unusual.

As soon as he arrived at the institute, he was shocked, which undoubtedly increased Rocky's confidence, so he immediately walked towards the depths of the tunnel.

However, just like just now, he was just about to take a step when the situation happened again!

This time, it was a voice from the depths of the tunnel!

"Finally someone has found this place......"

"Who!"

Rocky was not only shocked but even frightened to hear someone talking, and still talking to himself!

"Come on...... Come on...... I don't know who you are, but I've been waiting here for too long, so hurry up. ”

The voice from the depths of the tunnel ignored Rocky, but spoke to himself, as if he wanted him to hurry down......!