Puppet Nation Jistav

Puppet Nation Jistav is the country formerly under Demon Lord Clayman's control and part of his territory. When Clayman was killed, it was then delegated to Milim as one of her new dominions.

History
In the distant past, the Ultra-Sorcery Kingdom of the Elves was once prosperous, but by its own stupidity, called upon its destruction. The nation angered a young girl who would come to be a demon lord — Milim Nava, the daughter of Star King Dragon Veldanava. As a result, the kingdom was wiped from the face of the earth overnight.

The rubble left in its wake was known as the ancient ruin ‘Soma.’ Elves that managed to survive swore to restore the glory that Soma once held, yet they failed in their conquest. The depraved monster that they themselves created—the Chaos Dragon—wielded power beyond belief and drove these people away from their hometown. The power held by the Chaos Dragon was the equivalent of Catastrophe-class. Although it was not as strong as a True Dragon, it still wasn’t something the elves could tackle.

The elven survivors went on to spread across the land and walked down different paths. Struck by the sudden misfortune, the elven people, ignorant of the event that took place, sought refuge from their elven ancestors. Those with power explored and settled in the wilderness before building new kingdoms. Some escaped in secret, became reclusive, and lived away from civilizations.

Because of the sins of a few individuals, the golden age of elves came to an end. Some were cursed for their sins and became dark elves. In order to escape from Milim’s fury, they went afar to explore a new land.

Demon Lord Kazalim was one of them. They managed to survive after witnessing the true power of Demon Lord Milim and was among the few remaining members of the elven royal family. Kazalim was not a Demon Lord then. They escaped to this distant land and tried to rebuild a nation in the image of their hometown. They managed to preserve all the elven technology, so it hadn’t been lost, and thus they proceeded to recreating physical copies. The nation that was born as a result was the capital Amrita of the Puppet Nation Jistav.

A few hundred years ago, Kazalim challenged the self-proclaimed Demon Lord Leon Cromwell and was defeated. Clayman took over the territory since then and ruled it until his death.

Clayman's Castle
The Castle that acted as Clayman's primary base and residence, originally belonged to Kazalim when they were the ruler of Jistav. Upon their physical death in Leon's hands, Clayman soon took over the castle in his stead.

The Castle itself acted as Clayman's primary power base where he plotted out his operations and held meetings with his associates, including the members of the Moderate Harlequin Alliance and other Demon Lords. It was well protected by Legions of Undead created by Adalman, The Index Finger of Clayman's Five Fingers, who was cursed by Kazalim to act as the guardian.

The interior of the castle is described as extravagant, decorated with many expensive arts and furniture. After Clayman's downfall, the castle is being managed by dark elves.

Ruins of Amrita
Underneath Clayman's Castle lies the ruins of Amrita, accessible via an enchanted giant gate that only Clayman could open previously. The true identity of the ancient ruins is the magic defense mechanism for the city setup by Kazalim. Unlike the city on the surface protected by Adalman, Amrita was mainly guarded by Kazalim’s spells and their numerous golems.

The ruins is divided into 3 levels.

Death Valley
A path winding through jagged mountains. It was a rough, unfastened road that travel between Clayman’s territory and the Eastern Empire. Despite this treacherous road being laden with monsters, traces of Clayman’s subordinates using the road had been found. Kumara's homeland—the “Cryptid County" was also located here.

Military
Clayman's army was shown to primarily be made up of various Majin and other non human beings as his soldiers, led by Yamza, who was the Middle Finger of the Five Fingers. Another portion of his forces was also shown to be made up of the undead minions created by Adalman but they primarily acted as the defense force for his castle.

For espionage and intel gathering, Mjurran and Pirone usually acted as Clayman's spies.

Eastern Empire
The Eastern Empire particularly had no interest towards Jistav initially, though some years after Amrita's establishment they did attack it once, and its defenses failed. Years following Kazalim's demise and Clayman's ascension as one of the Ten Great Demon Lords, the Empire began a trading relationship with Jistav through Damrada with Clayman purchasing many high-grade weapons and other equipments for his army. However, the Empire's true intention was to use Clayman in conquering the Great Jura Forest by having him crush any threats to their conquest, and for this reason, they had used Justice King Michael to dominate Clayman, forcing him to focus on destroying the Jura Tempest Federation as well as defeating the Storm Dragon Veldora, who had once foiled their invasion of the Great Jura Forest in the past.

Armed Nation of Dwargon
Jistav also had a trading relationship with the Armed Nation of Dwargon and would trade many high-quality weaponry and others for Clayman's army. Despite Clayman being known to be a ghastly man, Dwargon continued trading though they were highly cautious while doing so. However, following the revelation of Clayman being the mastermind behind the allied attack on the Jura Tempest Federation, Dwargon was hostile towards the Demon Lord and supported Tempest in their plans to defeat him.

Holy Empire Ruberios
Clayman considers the Western Saints Church to be a mysterious organization and wishes to learn about it's secrets. In order to do so, he sent Laplace to investigate the Church, but his infiltration attempts failed twice.

Trivia

 * Interestingly enough, Clayman never considered himself to be the ruler of Jistav. He always considered the territory to be Kazalim's and stated that he was taking care of it until his return.