A sub-world was divided into three tiers; the low world, mid world, and high world.

Most of the gods didn't care about the low and mid world but the high world was a different story as some of the resources of the high world could rival the resources in Imperium. If his memories were right, Goddess Athena, the one he served in the game, had one hundred seventy nine high worlds under her rule. While Souta only had one high world under his rule and that world was given to him by the twelve executives of the Mechanic Country after he was promoted to a chief commander rank.

Although gods and deities took control of thousands of high worlds, there were still high worlds out there that doesn't belong to a god. Some of the folks there rose to god-level and took control of their own world. A god that doesn't in Imperium and people from Imperium called them Outer Gods.

Most of the countries in Imperium were recruiting those Outer Gods as they didn't belong to any organization.

"I've decided. We will visit those sub-worlds first."

Souta said as he looked at Alice, Torkez, Franklin, Isabella, Yenxa, Yuko, and Doranjan. He should inform Lumilia and Lynn about this so that they wouldn't wait for him.

"We're not at the level of gods yet so a mid and high world could pose a threat to us so prepare yourself."

Everyone nodded at his words. Most of them didn't know anything about the higher world so they didn't have opinions about his idea.

On the next day, the group received the supply from the palace and it was enough for five months. Souta thanked them and gave a bunch of gold and silver to the king. He also didn't forget to ask about the High Serenity Palace.

The national library of the king had some records about the organization and it seems that the High Serenity Palace helped their ancestor in founding this kingdom.

After taking all the information about the organization from the higher world, the Guardian Fortress disappeared using the transportational gate.

Inside the meeting room of the Guardian Fortress, everyone has gathered.

"Now that everyone is here let's start the meeting," Souta said as he sat down on his seat.

Torkez stood up and unfold a huge brown paper on the table so that everyone could see the contents.

"The people from that planet didn't even know what's in this paper. No, they couldn't understand it as they have no way to leave their planets. They don't have the technology to realize the vastness of the universe."

Torkez explained in simple words so that everyone could understand. He then pointed his finger at a drawing on the paper.

"This is a map from their national library left behind by their ancestors and this is our current location. They called this galaxy a dead field as most of the planets and stars here didn't have mana except for one, the planet that we just visited.

"And then there's this blank space. This was the space between two galaxies and it was so huge that it would take us five use of transportational gates to travel through it."

Alice furrowed her brows while looking at the map. She slowly opened her mouth and said, "That's five days, we have supply now so it won't be a problem for us."

"Is that our destination? A galaxy that has a high world?" Franklin asked.

Souta simply listened to them without voicing his opinion. He was trying to find the reason why the Great Astley Empire didn't meet any high world on their way to Imperium.

"No, this galaxy is another dead field." Torkez shook his head. Then, he added, "But there's a planet here that will lead us to the galaxy of the High Serenity Palace."

Before someone asked a question he continued his explanation.

"That planet has a teleportation device and that teleportation device is greater than the transportational gate that we are currently using."

The transportational device couldn't travel from one galaxy to another in just one use. Yet, the device on that planet was said to pass through several galaxies in just one use. The difference was so large that Torkez could hardly believe it.

Souta knew that machines like transportational gate didn't have any use in Imperium. The density of mana in Imperium was too high that it will block them from creating a shortcut in the space. This was the reason why space magician was too rare in Imperium.

It will need thousand times of power to tear the space in Imperium compared to outer space and sub-world.

It was also the reason why Souta didn't leave a [Shadow Ball] when the [Dimensional Hole] spell swallowed him, Alice, and Yuko. He knew that the range of his [Shadow Ball] spell was limited in Imperium.

Well, this spell was already greater than the transportational gate. Because of low mana density, he could directly teleport to the Astley Planet if he left a [Shadow Ball] there. The transportational gate couldn't do that.

The only problem was that he could only teleport to the black ball.

"Don't worry about finding the planet as we already had a map of that dead field galaxy."

Torkez said with a smile.

"Okay, I can't wait for it." Franklin grinned widely.

"Me too, I couldn't find any suitable herbs that I can use on the previous planet so maybe I will find some in the high world," Isabella said with a hint of excitement in her tone. It seems that she was eager to try what she discovered in the mid and high grade potions that Souta gave to her.

"You will find what you want there." Souta smiled as he assured her.

The group continued their journey and after six days they've arrived on the designated planet. Five days to arrive at the dead field and one day to arrive at the planet.

"This is not a machine or some sort of device. It's a teleportation spell."

Alice said while looking at the ground.

Souta and the others walked beside her and looked at the ground. They saw a complicated magic circle carved on the ground. It has a diameter of two meters and judging from its structure it will take a huge amount of energy to activate it.

"Is this really a spell? It's too complicated for me to understand its structure." Franklin commented from the side.

"It's a high tier spell so it's natural that you haven't seen something like this before," Souta replied to Franklin.

"We're lucky that the magic circle didn't have any damage or else we wouldn't be able to use it," Alice said as she squatted down and touch the magic circle.

"According to the information that we've gathered, it's been one hundred years since someone used this one," Torkez said.

That was the last time since the people from High Serenity Palace visited the previous planet. Since then, no one has appeared and it seems that they've abandoned that planet.

"We can use it and head to the other side of the spell... Everyone prepare yourself! We don't know if the people from the other side will be hostile to us or not!" Souta said in a loud voice.

This spell was the same as the one in the Undead Sanctuary. Both of them were carved on the ground for transportation purposes. The only difference was that the magic circle of the Undead Sanctuary was more advance than this one and it only needed a little amount of energy to activate.

After a few minutes, the group moved the Guardian Fortress above the magic circle. They were going to bring the fortress with them as most of their supplies were here. Also, the bunch of spiritual fruits that Souta brought from the living labyrinth was here.

He couldn't leave everything behind.

Souta was standing on the magic circle while the Guardian Fortress was just above him. He opened a bunch of low-grade mana potions and poured it on the magic circle.

After a few moments, the magic circle emitted a white light and it grew brighter every second. Soon, Souta and the fortress was engulfed by white light and they disappeared on the surface of the planet.

...

"We're here..."

Souta opened his eyes and he looked at his surrounding area. Debris of rocks was all over the place and it seems that this place was a castle previously.

The breeze blows on his face as the dust slowly shot up in the mid-air.

"Is this the High Serenity Palace...?"

He muttered as he didn't expect this situation at all. The place was literally an abandoned ruin. Maybe, the enemy of the High Serenity Palace destroyed them and that's the reason why no one visited the previous world for a hundred years.

He raised his head and saw the others come out of the fortress. They had a curious expression on their face while looking around.

"This situation is quite favorable to us."

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