Shim Jin-Hae is a complex and intriguing figure, a detective whose unremarkable exterior masks a brilliant and perceptive mind. At twenty-seven, he hails from the Yellow Sea, immediately setting him apart as an outsider in the social and political landscape of Lucheng. His physical description suggests a man who prefers to blend in rather than stand out. He has common features, brown hair, and a naturally well-built physique. His most distinctive feature is his heterochromic eyes, which range from “beer gold to amber green,” yet he often hides them behind half-moon glasses, a symbolic barrier between his inner thoughts and the outside world. His attire—a hand-dyed, splattered tunic and jacket—is practical and slightly bohemian, reflecting a personality that is artistic and observant rather than ostentatious.
As a detective, Jin-Hae is a master of perception and psychological manipulation. His methodology is not one of forceful interrogation but of strategic conversation and careful observation. He employs a “façée of fake naivety,” asking seemingly innocent questions to lull suspects into a false sense of security and extract more information. Guiying quickly discerns the “shrewdness and intelligence hidden beneath his fake naivety.” He is meticulous, requesting comprehensive plans of the bank and insisting on interviewing every employee to ensure no detail is overlooked. His intellect is deductive and patient; he pieces together the inside job not through a single clue, but by recognizing a pattern—the perfectly aligned stories of the staff, the unusually low retrieval rate that year, and the architectural anomaly of the single large room behind the vault. His theory of a gradual, months-long theft orchestrated by Mr. Qian and Mr. Mei is a testament to his ability to see the larger picture where others see an impossible crime.
Beneath his professional exterior lies a man of remarkable politeness and deep-seated integrity, which directly fuels his internal conflict regarding Guiying. He is clearly captivated by her. He compliments her eyes, comparing them to “aromatic red tea,” a gesture that flusters her because it feels genuine. During their speakeasy mission, the act of being close to her as “Jin-Hwan” and “Guihua” gives him an “unstoppable rush of emotions.” He brushes a strand of hair from her face, a moment of tender intimacy that seems to escape his controlled demeanor. His gaze often lingers on her, and when she proposes using a pseudonym, he replies, “I highly doubt that,” when she claims to have an ordinary face, his voice trailing off as if lost in his feelings.
However, it is precisely these growing feelings that lead him to reject her prom invitation. His refusal is not born from a lack of interest, but from a profound sense of honor and a pragmatic understanding of their positions. His concerns are layered: he is a “foreigner,” there is a “significant age difference,” and most importantly, he is “an ordinary merman with no status to speak of.” He believes a romantic entanglement with the emperor’s daughter is “inappropriate” and that the social disparity “weighs heavily on him.” His rejection is delivered with palpable sorrow and panic. He whispers her name anxiously, pleads with her not to be hurt, and even confesses, “I would love to go to the prom with you. But… I can’t… We can’t…” This reveals a man trapped by his own principles and social consciousness, forced to break the heart of the one person who sees past his detective facade to the man beneath. He is a tragic romantic figure, whose professional triumph is shadowed by a personal sacrifice made out of a deep, if frustrating, sense of duty and respect.
