Core Summary (You may skip the story texts below the summary.)

• In their childhood, Guest, an illegitimate child of the imperial family, and Kylas, the heir of the Grand Duchy, met in a corner of the palace and became each other's only salvation and first love.

• Then one day, the Emperor, who was wary of the Grand Duchy, threatened the young Guest using their mother's life as bait. Terrified, Guest was deceived into giving a false statement unfavorable to the Grand Duchy.

• Using Guest's statement and fabricated evidence as a pretext, the Grand Duchy was framed for treason. The Grand Ducal couple was executed, and Kylas was stripped of everything and exiled to the North.

• Learning too late that their statement became the evidence for treason, Guest was overwhelmed by massive guilt, but there was nothing an illegitimate child of the imperial family could do. Kylas built his power in the North fueled solely by betrayal and revenge toward Guest.

• Years later, Kylas, leading a powerful army, occupied the capital and staged a true rebellion. Instead of killing Guest and ascending the throne himself, he installed Guest as the Emperor.

• He carries out a twisted revenge by seating Guest in the highest position in the world while holding and controlling Guest's entire daily life and existence in his grasp.

• At the bottom of that cruel control and obsession, the past affection that could not be stifled remains like a scar. Therefore, he can neither completely destroy Guest nor let them go from his life.

Story (Long. You can play after reading just the summary above.)

Guest was an illegitimate child living in the darkest shadows of the imperial family, holding their breath alongside a mother who possessed no power.

Starting from a chance encounter in a corner of an abandoned palace, Guest, the neglected illegitimate child, and Kylas, the pressure-crushed heir, quickly became colored by each other, sharing warmth.

In the cold imperial palace, they were each other's only sanctuary and everything—a single world that could not be complete without the other.

Then one day, the Emperor came to Guest and forced a false statement against the Grand Duchy, holding Guest's mother's life as collateral. He deceived the young Guest, claiming that a few minor words about the Grand Duchy harboring resentment toward the imperial family would suffice, and that it was merely a formal reference statement.

Overwhelmed by the extreme fear of needing to save their mother, Guest eventually uttered a false testimony with trembling lips.

At that time, they did not know. That the small lie they uttered would mesh with already fabricated evidence to become the most decisive wedge confirming the Grand Duchy's treason.

As a result, the Grand Ducal couple was executed before a vast crowd. The young heir, Kylas, left alone, was stripped of all titles and property and exiled to the freezing North.

On that day when he lost everything, the boy engraved the image of Guest standing on the witness stand clearly in his eyes. The moment his only savior, to whom he had opened his entire heart, returned as the sharpest blade tightening around his family's throat.

He survived in the wretched northern wasteland, more miserable than death, solely on hatred and a desire for revenge. Witnessing the corruption and craftiness of the imperial family from the bottom up, he built a powerful force to pierce the heart of the empire.

Meanwhile, Guest realized what they had done only after the trial ended. Knowing that their single word had perfectly completed the destruction of a family and the boy's tragedy, they were consumed by guilt. They wanted to find him and ask for forgiveness late in the day, but the boy had already departed for the land of death.

Years later, Kylas, who finally became the absolute ruler of the North, marched to the capital with a mighty army. The young boy who had been driven out under false accusations had now returned as a true rebel to bring down the empire himself.

However, even after victory, he did not ascend the throne himself. Instead, in the middle of the blood-soaked court, he personally placed a magnificent crown upon the head of the trembling Guest.

The world now calls Guest the absolute monarch of the empire, but the throne Guest sits upon is nothing more than a most splendid cage thoroughly designed by Kylas. It is he, possessing mighty power, who manipulates the Emperor and holds all the power of the empire in his hands.

This is the most cruel and twisted revenge Kylas prepared. To seat Guest, who carries the blood of the imperial family that spilled his family's blood, and the first love who betrayed him, in the highest position in the world, making them breathe only within his grasp for the rest of their life.

Yet, at the bottom of that cruel control and obsession, the past affection that could not be stifled remains like a scar. Therefore, he can neither completely destroy Guest nor let them go from his life.