At this moment, Leo was staring at the deep part of the cave with a keen interest in his eyes. He already understood, only by going deeper that way would he find out the truth.

It wasn't really that dangerous anyway, since those Black organization members should have long been gone just from observing the dead bodies.

The dead bodies were either covered in dirt or had turned into mere bones, obviously because of the Magical Beast around eating its flesh. Moreover, there was no sound up in front too, which definitely explains that there are no Black organization members inside this cave at this moment.

Quickly, Leo started running to the deepest part of the cave. Only over there would he be able to know about the Black organization's movement. Only that place will explain to him what the Black organization was secretly planning to do. And only that place could make him understand the Black organization's actual goal in mind.

Soon, Leo arrived in a large open space. In the middle of this open space was a Magical Beast, specifically a dead One Star Magical Beast Sewer Lizard, again.

Looking at the body, he could already conclude that the Sewer Lizard died due to the numerous wounds around its body, causing blood to keep oozing out until it eventually died due to the lack of blood.

The Sewer Lizard in front of him also had somewhat the same wounds on the Sewer Lizard back in the West Sewer, caused by blades, arrows, and Magic spells.

Obviously, this only meant that the one that caused the serious injury to that Sewer Lizard back at West Sewer might be the same people, Black organization.

"Why did the two Sewer Lizard stayed in the West and East Sewer of Silver city...?" Leo suddenly thought in his mind. He had also thought about this when he first saw a One Star Magical Beast in the West Sewer, why is a One Star Magical Beast staying in that place, and it was actually unnoticed until this time, too.

Moreover, he also found a dozen pieces of dark blue colored large Mana stones at the very end of that cave, which there might also be in this cave.

In front of Leo was a hole leading to the end of the cave. He would find his answer if he enters this hole.

Without wasting any more time, Leo runs through that area. After a while, he finally arrived at the end of the cave. Immediately, he turns his head up above him.

Leo quickly became astonished, "12 pieces of large Mana stones!!"

There are still another 12 pieces of dark blue-colored large Mana stones. Such a thing to be found again, obviously meant one thing; this dozen of large Mana stone was the Black organization's real goal.

Leo finally understood everything.

"The Black organization sent out its men to this place to snatch these 12 pieces of dark blue colored large Mana stones for a still unknown purpose..."

"But, unfortunately, the majority of their men were injured during the battle in the outer part of the cave, causing them to be unable to completely kill the One Star Magical Beast Sewer Lizard..."

"However, since they had already dealt a serious injury to the Sewer Lizard, they immediately thought that instead of continuing the fight, they might as well just retreat and wait until the Sewer Lizard eventually dies because of the serious injury. By doing so, they will avoid more casualties and could easily snatch a dozen pieces of large Mana stones in the deepest part of the cave afterwards!" Leo said to himself, finally being able to understand what had really happened in this cave.

Leo's reasoning was simple; when he arrived at the scene on the battlefield, specifically the outer part of the cave, he had found out plenty of Human dead bodies, which only means that the Black organization received a heavy casualty during that fight. This in turn caused them to be unable to completely defeat the Sewer Lizard guarding the 12 pieces of dark blue colored large Mana stones. However, during the fight, one of their people had seriously injured the Sewer Lizard. Maybe that Mage with a golden token that he had found a while ago, exchanging a life just to deal serious injury to the Sewer Lizard.

"What a bunch of lunatic members this Black organization has to actually make one of their members, a Mage on top of that, to exchange its life just to complete a mere mission. Even I wouldn't do such a thing!" Leo said to himself, showing pity to the dead Mage.

In his opinion, that Mage had just wasted its life, since it had actually chosen to sacrifice its life to an organization made out of a bunch of lunatics.

Shaking his head, Leo puts aside those thoughts. Seeing the 12 pieces of large Mana stones, obviously, he wanted to claim it for himself.

"Hahaha, since you left these 12 pieces of large Mana stones in here, then I'll fully accept this meeting gift!" Leo said to himself before he ordered his Earth Elemental to remove the 12 pieces of large Mana stones from the top of the cave.

Soon, the 12 large Mana stones lay fully in front of Leo. It was really the same as what he had found in a cave in the west sewer, an already refined large Mana stone that has a diameter of 15 inches.

"Another treasure to strengthen me!" Leo said before letting out a triumphant laugh. With these 12 pieces of large Mana stones, he will be able to strengthen his Mana capacity again, hence being able to summon more Elementals, and he might be able to also completely form the upper half of the Fire Elemental body in his consciousness.

Afterwards, Leo quickly puts the large Mana stones inside the net bags he had bought before he ordered his Earth Elemental to carry it as they finally left the place.

Of course, Leo wasn't yet safe. He still needed to find more Magical Beast around, so that he will be able to fully hide the 12 pieces of large Mana stones inside the net bags.

Obviously, he cannot just bluntly walk around carrying the 12 pieces of large Mana stones. Doing so was stupid. Fate knows just what trouble would soon follow after doing such a stupid thing.

Moreover, Leo was sure that a member of the Black organization was hiding as a staff of the East Sewer Management.

For the Black organization to slip inside with dozens of men, obviously, someone had helped them get inside without getting noticed by anyone. Unless, of course, if they had used the other entrance of the east sewer, which is the sewer near the East Fortress.

However, by doing so would be too stupid, since with how many members that the Black organization had sent out for this secret mission, being found out by the patrolling soldiers on top of the East Fortress wall is definitely possible.

Obviously, the Black organization wasn't stupid enough to not be able to think of such a possibility.

The Black organization won't be able to run rampant in the northern region of the Silver Kingdom without getting caught if they were really that stupid.

Furthermore, Leo wouldn't be treating the Black organization seriously if they were really that stupid, too.

An unknown organization being able to make one of its members, a Mage on top of that, sacrifice its life just for the success of a mere mission. Obviously, it's not a stupid organization, but an organization made out of lunatics.

After a while, Leo had finally hunted down enough Magical Beast to fully cover the dozen of pieces of large Mana stones within the net bags.

It was already night when Leo had completed the mission. Unfortunately, the East Sewer had fewer Magical Beast compare to the West Sewer, obviously due to the battle between the Black organization and Magical Beast that had happened in the Magical Beast nest.

"Wow! You were actually able to kill 88 Magical Beast, which is a total of 880 points!" Christian said as he stared in shock at Leo after finishing counting the Magical Beast head that the latter had killed. It was really out of his expectations for a young man to be able to kill this many Magical Beast in a span of the whole morning till night time.

If only Christian had heard of the amount of a Magical Beast that Leo had killed in the West Sewer, he would definitely be shocked beyond belief right now.

After all, at that time, Leo had successfully killed a total of 115 Magical Beast, much higher than the 88 he had just killed in the east sewer. Plus, he had also bought the head of a One-Star Magical Beast, which has then earned him a whopping 1250 points!

Unfortunately, this time Leo didn't dare bring the head of the Sewer Lizard, since a member of the Black organization was definitely acting as a staff of East Sewer Management.

Christian gave Leo the Official Seal before he bid farewell to the latter.

Just like what Leo had expected, Christian wasn't able to find out that he had hidden a dozen of pieces of large Mana stones within the net bags covered by the Magical Beast bodies that the latter had deemed as useless.

Only the heads of the Magical Beast matters for them and those heads were only needed for them to be able to know the exact amount of points that they will give to him. So, every part of the Magical Beast that he had hunted was actually just useless for the East Sewer Management.

However, they didn't know that the net bags that they had deemed as useless were actually the real treasure.