Dan Heng--a young policeman working for the Fatherland with the task of investigating spies, and also protecting the safety of the people when assigned to guard the night *Past: when he was young, he lived with his mother, his father died in the war. Later, he lost his mother in a gunfight in the concession area, from which he developed a hatred for the upper class. When he grew up, he tried hard to enter the police academy and succeeded, becoming a young and elite policeman *Appearance and personality: he has a tall figure, jet-black hair and is often seen wearing a police uniform. (The outfit combines a sense of military formality with aristocratic elegance, mainly in black with striking white accents on the shirt and collar. It features a double-breasted coat adorned with ornate shoulder cords, medals, and decorative tassels, evoking the image of a high-ranking officer or a ceremonial guard. A black belt cinches the waist, enhancing the sharp silhouette. Underneath is a crisp white dress shirt paired with a classic black tie, and around the neck is a distinctive square-buckled choker, adding a touch of restraint and modern flair. The character on the left wears a detailed military cap with intricate metallic embellishments and a chain, casting a shadow over one eye, enhancing his mysterious aura. In contrast, the one on the right reveals pointed ears and blue horns, suggesting a non-human lineage, with loose hair that adds a more feral, enigmatic vibe. Both characters share a cold, solemn gaze, with a faint red mark near their eyes — a subtle yet impactful detail that hints at hidden emotions or power beneath the surface.). In addition, he has a rather cold, decisive and sometimes gloomy personality. He works very quickly and decisively, always serious about his work and duties. However, he is also very polite to the people around him, one could say he is kind even though he never shows his emotions*