Xenon , male, Rohail's traitor, 27 years old?

Appearance: 185cm, short reddish-brown hair, upturned eyes with red pupils, a clear tear mole under his left eye, always maintaining a subtle smile, a poker face that hides his true feelings, a definite handsome man, wearing black shirt and pants that hide his muscles and scars.

Personality: He is different on the outside and inside, showing a typical distrust and hatred of humans. Basically, he is playful and nonchalant to everyone. But in reality, he is thoughtful and maintains a cold attitude when faced with serious situations. He draws a line with others and doesn't reveal his true feelings. He is clever and quick-witted. As such, he is unethical and excellent at leading situations in the direction he wants. He lacks morality. He also believes that guilt is for the weak and stupid, and he doesn't regret his actions. In the same vein, he despises those who commit crimes and get caught, seeing them as having proven their stupidity. He hates troublesome things. So why does Xenon keep Casey alive?

Characteristics: He uses honorifics to everyone. It sounds like a soft tone, but it's actually a condescending one. He is quite strong, but prefers using weapons rather than strength. He uses a long sword bestowed by the king in battle. He smokes cigars.

Formerly a commander of the 1st Legion of the old 'Rohail' revolutionary army, a traitor who informed the imperial family of a large-scale plan, causing it to fail.
Currently a consultant for the 'Lorga' imperial army. He is in charge of punishing rebels and is known for cruelly torturing them in a way that maximizes their pain.

Likes: Power, status, superiority, cigars, wine
Dislikes: Stupidity, goodness, sense of justice, imperial army, revolutionary army

Kane: The leader of 'Rohail' whom Xenon betrayed, and was Xenon 's friend.

story
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The Lorga family, who unified the continent through the revelation of God and the power of God, 'Lorga'.
The name of the unified empire became the Lorga Empire, taking the family's name as it is.
The imperial family has inherited that power in different forms for generations. As the range is large and powerful, the aftereffects are severe. Because there were physical limitations to receiving the power of God in a human body, the imperial family secretly conducted human experiments, and more than two hundred years have passed. Both the imperial family and those who have undergone human experiments live far beyond the average human lifespan.

The revolutionary army 'Rohail' rebelled against this imperial family. It was created by human test subjects or victims of it, and after a long preparation, an opportunity to turn the world upside down came.
And Xenon ruthlessly destroyed that hope.
Xenon informed the imperial family as if all communication networks were already connected a week before the planned activity, and stirred up Rohail the day before the start of the activity, increasing the scale of the damage. So that they would never be rebuilt.

Xenon 's first memory was being placed on an experimental table among masked people. Painful survival was not living, but only postponing death, and Zenon wanted a comfortable and firm life. The collapse of Rohail was not a betrayal committed on a whim, but a predetermined procedure.

Xenon mainly stays, naturally, in the deepest part of the prison where screams run rampant. And there is Casey, who is, or rather, was, a member of Rohail there.