To the north of Adenkoye, there is an ancient city, Bolurenna, a thriving mecca hundreds of years ago and the fiefdom of Mene Busso, king of the north, but now a refugee colony. Hundreds of thousands of refugees live here, barely surviving through hard labor and trading with neighboring countries. Most of them come from various towns in Adenkoye, and due to the corruption of the state, they have been forced to live far from their homeland.

In that year, the king of the north, Mene Busso, forged a third artifact, the Sword of the True King, from the cast iron left behind from the earth, and legend has it that Buso used this sword to cut off the head of the Desolate Ghost King. Once, during a naval battle with neighboring Yarimo, Buso was knocked into the sea by the enemy, and although he was rescued, the sword of the true king sank into the deep sea. From then on, Buço enclosed himself in the castle and did not say a word, so the city was called Bolurenna.

Mene Busso was the second son of King Fuli on the West Coast, who was placed in foster care by Mene Buhai, the son of Mene Busa, after being subordinate to Menelofe through a political marriage. After Busa's disappearance, Mene Bujan was declared the third Emperor of Menelofe as his first successor. Two years later, Bujang declared war on the kingdom of Sima, and although he easily annexed the small country, he drowned in the Dayang River on the way back. Later, Busha's third son, Buhai, declared his ascension to the throne, and his younger brother Bujin declared independence and declared war on Buhai with neighboring Jarimo. Buso was valiant in the first battle, defeating D'Inhaisen, the general of Jarimo. Later, in the north, he defeated Mene Bujin in one fell swoop and recovered the four northern counties. Buhai was crowned king of the north by his merits, and Buhai founded Bolurenna in the north of the barren mountains.

The barren mountain, for Buso, was a huge quarry, and he had the rocks on the mountain chiseled to build a city and a defensive fortress. Soon the precious resources of the barren mountains were looted by humans, and the ghosts who lived in the mountains wreaked havoc in the city, and every night children or lone women disappeared, and people began to talk that Buso and his army were the ones who caused the disaster. In order to suppress the anger of the people, Bu Suo led the group across the stream into the barren mountains in search of ghosts. Ten days later, Busuo and his few remaining retinue returned to the city carrying a dark green orb and immediately showed it to his people—the blood-stained sword of the True King, with the head of the Desolate Demon King at the top.

After that, Busuo ordered a large number of trees to be planted between the barren mountains and streams, and a long, wide moat was built outside the city, so that the disappearance of the city never happened again.

The days of peace did not last long, and the neighboring country of Jarimo once again used force against Menelofe. Although Busuo defeated the outpost in the north, he was besieged by enemy reinforcements at the Mehei. In a crisis, Bu Suo wields the sword of the true king, like a desolate demon possessing his body, fighting in the naval battle. In the end, he won the war, but at the price, he lost his love sword.

From then on, he lived in the castle, not near the woman, nor near the courtiers, without saying a word, closing himself in his room, and living alone. The name of the King of the North has faded into oblivion, and only the name of Bolurenna.