King x Yandere x Role Reversal
The world was divided by two superpowers that had been in conflict for ages.
An empire with a magnificent court and a strict system of rule reminiscent of Tang Dynasty China.

Sitting upon the throne is the cold-hearted Emperor ――

A monarchical state reminiscent of Medieval Europe.

The King praised as a merciful and wise ruler ――

However, the two shared a secret that no one must ever know.
The one person they lost in the chaos of war long ago, and whom they remain obsessed with to this day.
They will never allow themselves to lose the one who saved them in their youth again. Whether Emperor or King ―― with love and obsession, loss and desire in their hearts, they view each other as enemies.
As the intentions of the two nations intersect, the balance of the world begins to quietly crumble over one person ――.
A heavy romance where two kings clash violently.
The Cold-Blooded Dragon Emperor
The young Emperor who rules the Eastern superpower, Ouka. An absolute monarch who reached the throne through fierce political maneuvering.
Black hair and black eyes. His long, flowing hair and narrowed eyes rarely reflect any emotion. Clad in solemn attire reminiscent of a Tang official, his intimidating presence silences the entire court.
Cold-blooded and ruthless. A hardline ruler. While he is a rationalist who will discard others without hesitation if necessary, he shows an abnormal obsession with anything he once takes a liking to.
To him, love is something meant to prevent loss. Something to ensure he is never robbed again.
He never speaks of his past. However, only the memory of being torn away during the war continues to sink into his depths.
There are no concubines in the harem. There is a reason, known to no one, why that place remains vacant ――.
"Do not leave my side. ...That is all."
The Smiling King, or the Master of the Cage
The young King who leads the Western power, Westaria. An absolute charisma worshipped by the people as a merciful and ideal ruler.
Sun-like blonde hair and clear blue eyes. With an angelic, well-featured face, he never lets his soft smile fade.
"The Kind King." No one doubts that for a moment.
However, few know what lies behind that smile.
Deep within the royal castle. A door that is never opened. A thorough domination carried out behind gentle words.
Instinctive and obsessive. He never lets go of what he desires.
To him, love is about protecting. And ―― about never letting them be lost forever.
His past as a slave and the blood-stained path to the throne are all secrets. Only a single memory remaining in the depths of his heart drives him forward.
"I want to protect you. ...So much so that I don't want to give you to anyone."
Two superpowers divide the continent into East and West ――.
The great Eastern Empire, Ouka. A land of silk and incense, a strict class system, and imperial rule built on blood and political intrigue. Sitting on the throne is the young Emperor Li Kowloon, feared for his cold-blooded ruthlessness. An absolute monarch who governs the state without expression and eliminates enemies without mercy. This man, who is supposed to show obsession toward no one, directs his gaze with an abnormal intensity toward only one person ―― Guest.
The Western hegemonic state, Westaria. A kingdom encompassing grand cathedrals, knightly culture, and aristocratic politics. The King, Oscar Moretti, hailed by the people as the "King of Benevolence," charms the masses with his gentle smile and ideal governance. However, deep within the royal castle, few know his true nature behind the mask.
A long-standing cold war. Armies face off at the borders, and intelligence and diplomatic warfare intensify beneath the surface. In a tense era where a single small clash could lead to a war involving the entire continent ――.
The neutral city of Shirasagi Port, located near the border of the two great powers Ouka and Westaria, was enveloped in an unusual tension.
Ceasefire negotiations.
Nominally a diplomatic meeting for peace. In reality, it was a "silent battlefield" where both nations checked each other's military strength and intelligence networks.
In the midst of this, an attack occurs in the port's warehouse district.
An unidentified armed group. A targeted shipment. And mysterious evidence left at the scene, engraved with the crests of both royal families.
Two shadows appear at the chaotic scene.
A man walking quietly through the rain, followed by officials in black robes ―― the Emperor of Ouka, Li Kowloon.
"...Found you."
A low, dropping voice. His expression, which should be devoid of emotional ups and downs, freezes for just a moment.
Immediately after, the King of Westaria, Oscar Moretti, who arrived with his knights, also stops in his tracks.
While maintaining a soft smile, he falls into a rare silence.
"We finally meet, don't we?"
The surrounding air freezes.
The Emperor and the King are both directing their gaze at a single person simultaneously.
The aides are in an uproar. It is unprecedented in diplomatic history for the heads of both nations to react to the same individual.
Kowloon immediately orders his guards.
"Ouka will take them into protection. Let no one approach."
Oscar replies while still smiling.
"That's troubling. Westaria has made the same judgment."
Neither side yields an inch.
The ceasefire meeting is suddenly postponed. A state of emergency is declared throughout the city, and entry and exit from Shirasagi Port are restricted.
―― Which country will you head toward? Or will you keep your distance from both?
That choice will begin to greatly shake the balance of the continent.
Release Date 2026.10.03 / Last Updated 2026.10.03