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To everyone who went against us, we will bare our fangs and retaliate.
To everyone who lends their hands to us, we will grant our blessing to them.
To our opponents, we will do to them what they have done to us.
In the future, I hope that we can be linked in friendship one day.

Rimuru Tempest

Jura Tempest Federation「ジュラテンペスト連邦国 Jura Tenpesuto Renpoukoku」or simply Tempest「テンペスト Tenpesuto」is a monster country ruled by Rimuru Tempest. It is located in the Jura Forest, which is also most of Rimuru's domain. Rimuru wanted Tempest to be a land ruled by a truly just King, where everyone is equal regardless of their race. Even if such a thing was highly optimistic, naive and idealistic, he decided to aim for that dream.


Rimuru had his dwelling built near the cave, at the seat of honor. From there, the houses of the clan lords, followed by that of the commoners were built.

As Rimuru wanted to get it right, the initial map was drawn with utmost precision. Drawing across, with large roads running through the city, this plan is best for overseeing the denizens’ behavior.

There is a special building in the center of town, where all the administrative duties are carried out in this building.

The city's magic circle, to the Sealed Cave, was set up near the gates. At the vacant lot near the guardhouse, to be precise. So in a one in a million chance monsters do pass through the circle, they can quickly deal with them. Bester, however, insists that it is impossible. That is since one needs to recite an incantation to transfer, it is impossible for monsters to use it.

Bester's research lab was built inside the Cave of the Seal. Bester set up a magic circle to the city from the cave, in the place, Rimuru defeated the Black Snake. A transportation magic system circle, to be precise. If one writes two identical circles, one can move between them. Bester then drew a circle inside his house and another inside the cave. And thus, he solved the transportation problem. Bester then proceeded to teach Rimuru, Gabil, and the rest. They were able to move easily between the city and the cave.

Since they were often having banquets a banquet hall was built. It's about the size of a gymnasium and is dome-shaped. The inside has wooden floors with a tatami-floored seat of honor. In the worst-case scenario, since this building can house so many people, it can be used for evacuation purposes. The building is quite large so it had to be built sturdy. The skeleton of it was reinforced with steel, but they are planning on changing that to demon steel eventually.

An entrance to the Dwelling of the Spirit was set up in Tempest. It was originally intended to be in the middle of the city, however, Ramiris abandoned the Dwelling of the Spirit. She wanted to occupy the tunnels Rimuru built to counter the Templars. She's planned on claiming the demon steel used to build it and connecting the tunnel into the labyrinth, she was discovered by Geld.

Rimuru agreed to Ramiris creating a labyrinth where she was to act as the +-manager. And thus the Labyrinth City of Tempest was formed where Rimuru would have the labyrinth generate some profit. Ramiris will live there, and he would get some pocket change from adventurers trying to defeat its forces. Ramiris would receive 20% of the profits. Rimuru had a road from the city laid there. It's a trip that doesn't even take half a day. It is located on the outer perimeter of the city, about 10 km away.

A stable was built nearby. Rimuru wanted to lay rails to transport people and baggage from there, since letting horses and magical beasts into the city would lead to new hygienic problems. Since it's relatively close to the city, an inn here would unlikely to bring many customers. So, they decided to build a motel instead. But if they built a labyrinth there, then an inn would be in order. If they wanted to truly relax, they could always come back to the Capital City of Tempest.


At first, to lay the plumbing, they had avoided building any houses. For the waterway, they redirected the water from the river. A building was constructed for water pipe control. There, the water is purified and distributed to every household. As for drainage, it is directed into underground sewage. As it is made from wood, they decided to preserve it by hardening it in cement. And, leading away from the city, it will end at a facility where it will be reprocessed into manure.

They have a system for drawing water, a well in every house, so it is a pretty advanced city. They have flushing toilets, there is a need to carry the pumped out water to the toilet in a bucket, but strong monsters don't particularly mind.

There are also those who don't excrete, though.

As one would expect, the forest is full bugs. Since one can't protect oneself against them, there's a chance of catching diseases they carry. Hence, Rimuru built window screens using spider threads, as an insect repellent.


After Rimuru took control of the goblin village and led them to victory against the Fanged Wolf Clan, 3 tribes, collectively numbering about 500 people, joined them. The goblin chieftains, Rugurud, Regurud, Rogurud, were promoted to Goblin Lords, while Rigurd was promoted to Goblin King. The opposing goblin faction stayed behind.

After the war against the Orc Lord, Geld and the Yellow Corps were recruited. Also, the remaining goblin faction joined as the Green Corps.

When the Farmas Kingdom invaded, a total of 100 citizens, including Shion, were killed; men, women, and even children. They were later resurrected and given the extra skills Perfect Memory EX and Self-Regeneration EX, making them immortal.


Tempest has been steadily trying to become the center of this world's commerce.

Tempest sells their magic potions to the merchant Garde-Myourmiles at 22 silver coins each. And the retail price set there is 25 silver coins. The selling price in Tempest is 20 silver coins. In addition, due to the matter of assisting adventurers, it was decided that the selling price to adventurers in Tempest is also 22 silver coins.

Originally it was possible to get to Tempest on horseback, the same was not true for carriages. They hadn't cleared any trees in the direction of the highway. They didn't want to stand out at the time, but that was before the earlier Orc incident. When the forest calmed down a trade route was created.

Highways were built that connected Tempest to the Brumund Kingdom and Dwargon. When the highway that connected Tempest and Brumund was completed, the merchants of Brumund would have no need to go through the Farmas Kingdom to reach the Dwarf Kingdom. Due to Farmas blocking the flow of goods from Dwargon to Brumund, Tempest is becoming the new center of trade routes.

Kaijin, Bester, Shuna, and Kurobee developed a barrier inscribed on top of demon steel. It uses artificial demon crystals as a fuel source. It's shaped like a cube with a volume of 1 meter. The thickness of the barrier is 50 cm. Thus, it's pretty heavy and hard to carry. But, once one starts it, it will naturally absorb magical energy from the surrounding and continue functioning indefinitely. So when they place this simple magic circle, named “Barrier-kun,” into operation along the 10 km long road securing security along the route.

Steel was discovered in some of the mountain's districts, and they buy it off the high orcs. So Kurobee and Kaijin are using it as a base to create weapons.

Alcohol is one of Tempest's specialties. Thus their alcohol diversity has also increased. They import the wine and produce the beer, along with potato and barley shochu.

Technological Advancements

According to Gazelle Dwargo with Kaijin and Bester here, the city will become the center of technological development. Due to Rimuru's knowledge from his previous life he is able to give new ideas for technology, such as aqueducts and neatly paved roads.


Rimuru established three rules for the inhabitants of the city:

  1. Do not attack a human.
  2. Do not attack your own.
  3. Do not look down on the other races.

The Tempest Resurrection Festival is celebrated once a year.

The Hobgoblins are already quite close to humans, even engaging in business while speaking the human language. That's not all, there are also High Orcs, with knowledge and technique of organizing work corps to establish and maintain roads.

In his free time Rimuru tried baking a handcrafted bowl out of clay, and the children, who saw him, decided to imitate him. As a result, every house now uses such bowls made by children. Moreover, the bowls have gotten rather pretty. There vividly colored, whether using medical herbs or some other dubious method and appear truly grand. A lot of experimentation went into making them.

Foreign Relations


Blumund wanted to form a cooperative relationship with Tempest. They propose to cooperate to support adventurers on their quest and assist them when they're having problems facing powerful monsters.

Blumund is a small country without much national power, their counter-measures against monsters are insufficient. They somehow cooperated with the Freedom Association, but the association can't be their only means of defense against monsters. Fortunately, there weren't any major damages caused by monsters to date, but in preparation for the future, they wished to form bilateral relations with Tempest. In order for the adventurers to succeed, and to reduce the threat the forest poses, Tempest would need to provide necessities such as beds and supplies for those working in the forest.

In turn, Blumund would try to guarantee certain benefits there and legitimize their identity as a nation. In other words, Brumund promised to recognize Tempest as a legitimate nation of monsters.

In addition, they would mutually stay vigilant about monsters and help each other in times of emergencies. Rimuru saw this as either way, they are supposed to be on guard, but with this, they would not have to worry about Blumund. They will notify and help each other when faced with assaults by powerful monsters.

In the event Blumund had to move a force through the forest, they would be counting on Tempest's cooperation. However, this wasn't something related to monsters. Because, they are to cooperate during emergencies, that also includes when the nation is being attacked. From Blumund's side, they now have a reason to get Tempest to cooperate even without their consent. Blumund feared the Eastern Empire would invade through the forest. In preparation for if that were to happen, they wanted Tempest to become the buffer state. However, if Tempest had a crisis, they would receive aid. Even if the empire ignored Tempest, they would have to send in reinforcements to Blumund.


Gazelle, The king of Dwargon ventured to Tempest to officially seek to form a non-aggression treaty with Tempest. Also as an under the table deal, he wanted to form a mutual technology research treaty, to share technological advancements. Essentially, Dwargon was recognizing Tempest as an official state, a country with sovereign rights.

It was decided, the country shall be known as the Monsters’ City "Tempest." They had intended to call it Rimuru, but that was too embarrassing so he forbid it. They compromised down to Tempest.

Sorcerer’s Dynasty Sarion

The Sorcerer's Dynasty Sarion has established diplomatic ties with Tempest. In addition, the trade route was built by Tempest. The path also connects them to Dwargon. For the products passing by, there's also the merit of direct import. However, the most important fact is, various technologies such as magic engineering and spirit engineering that flow into Tempest.

Farmenas Kingdom

A nonaggression treaty was bestowed upon the Youmu by the Demon Lord Rimuru Tempest. In the end, this treaty was used as a pretext as securing postwar investments and indemnity in support of Youmu. The signing of the nonaggression pact between the Rimuru and Youmu signified the end of a war that brought terror to the peoples of the kingdom. While it wasn't spoken, this pact also served to establish the legitimacy of the young hero-king.

Western Saints Church

After the war with the Knights Templar, Tempest's entire population was admitted as Demi-Human status, allowing them the same treatment as the Dwarves.

The hierarchy of the church accepted and recognize the current status of Tempest's citizens. This was accompanied by us being informed that the Knights Templar would be performing a regular cultural in place of regular compensation.

For the sake of an emergency contact, allowing either party to instantly contact the other, several people were left behind. However, monitoring them is no longer their purpose there.

Above everything else, as additional compensation, they were given a failed experiment of theirs. Basically a set of experimental equipment that they weren't able to complete. As for Hinata's broken sword, they were given that as well, and the few pieces of the spiritual armor that weren't completely destroyed. Analyzing them was fairly simple. At any rate, Rimuru passed over a duplicated sword to Hinata to replace her sword since she was pretty much defenseless. To note, the analysis of the Spirit Armor was actually a major development. Rimuru also had the chance to analyze the Spirit Equipment the knights used.


The Tengu chose to recognize Rimuru's rule over the forest, however, they would not tolerate it if he meddled in their affairs. They chose not to send any assistance to them either. They agreed on a nonintervention pact with each other. However, the privilege of the High Orcs that settles down upon the mountain was acknowledged. They agreed to it seeing as the mountain's blessings were not within their right to claim. For things like mineral ores, it is practical things that are useless for them. So the High Orcs would just be left alone.

Controlled Territory


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