TV-Series
Description
Kōyu Li is a civil official in the fictional empire of Saiunkoku and holds the rank of Vice-Secretary of the Ministry of Civil Affairs, serving directly under its chief, Kō Reishin. He is widely regarded as one of the most brilliant talents in the imperial court, having passed the national civil service examination at the age of sixteen with the highest possible rank of jōgen, making him the youngest person ever to achieve that distinction. He comes from a background of hardship; he was an orphan surviving on the streets by selling handmade lottery tickets before being discovered and adopted by Kō Reishin about twelve years before the main story begins. That adoption, though rooted in Reishin's somewhat arbitrary desire to emulate his brother Shōka, gave Kōyu a stable home and a path into the aristocracy, though he carries lasting emotional sensitivity about having been picked on a whim.

Personality-wise, Kōyu is strict, serious, and deeply principled. He places enormous value on rules, precedent, and institutional stability, and he approaches his duties with unwavering diligence. He often appears stern and uncompromising, openly frustrated by inefficiency or emotional decision-making. Despite this stern exterior, he has a short temper, is easily flustered, and becomes visibly nervous when forced to speak in public. He is also famously notorious for having a complete lack of sense of direction, a quirk that makes him a recurring source of humor; he can become lost within thirty steps in the palace, and a journey that takes someone else fifteen minutes can easily take him two hours. This trait is not innate but stems from a childhood incident in which his caretaker, Hyakugō, deliberately rearranged the furniture of a house to confuse him and prevent him from running away, permanently damaging his internal compass.

His central motivation is a deep sense of responsibility for the stable operation of the government. He prioritizes order and the proper functioning of institutions over personal attachments or idealism. At the beginning of the story, he is assigned to be a close advisor to the young emperor, Ryūki Shi, a duty that initially frustrates him because Ryūki shows no interest in governance and is rarely available. As Ryūki matures, Kōyu becomes a loyal and trusted retainer, publicly accepting an iris flower as a token of his allegiance. He frequently reviews and revises the emperor's written work and offers counsel grounded in practical governance. His role in the narrative often places him as the embodiment of institutional logic, serving as a counterbalance to idealistic or reform-minded characters. His strict adherence to protocol sometimes puts him at odds with the emperor's more flexible approach, illustrating the tension between tradition and change in the political structure of Saiunkoku.

Key relationships include his adoptive father and superior, Kō Reishin, toward whom Kōyu is deferential but also somewhat intimidated. He has a close, if loudly denied, friendship with Ran Shūei, a military official who constantly teases him about his short temper and poor sense of direction; their contrasting personalities, Shūei's flexibility versus Kōyu's rigidity, highlight different approaches to service. He serves as a tutor and mentor to Shūrei Hong, the story's protagonist, maintaining a formal, professional distance but eventually regarding her with respect and friendship. His relationship with the emperor Ryūki evolves from resentment to steadfast loyalty. He also shares a complicated dynamic with Seiran, the emperor's elder brother, sometimes displaying jealousy over their respective adoptions.

Kōyu undergoes clear character development over the course of the story. While he begins as a rigid figure who prioritizes rules above all else and often dismisses women as troublesome, he gradually learns to appreciate the value of compassion and flexibility. His experiences with Shūrei, Ryūki, and other colleagues force him to reconcile his devotion to order with the human realities of governance. At one point in the light novel series, he is investigated by the imperial censors for failing to perform his advisory duties adequately and is demoted, a setback that deepens his understanding of responsibility and consequence. Despite his prickly exterior, he forms genuine bonds of trust and affection with those he serves.

In terms of notable abilities, Kōyu is an exceptional administrator and scholar, known for his sharp intellect, legal knowledge, and ability to process complex bureaucratic matters efficiently. He is considered the foremost talent in the court. His legendary directionlessness is both a comedic flaw and a distinguishing trait, occasionally causing him to wander into trouble, though he sometimes finds his way when danger is imminent. He also demonstrates a degree of loyalty and courage in protecting his superiors and the institutions he values. His physical appearance is described as handsome, with a lean build and an intelligent demeanor. His dedication to duty, his intellectual brilliance, and his struggle to balance principle with compassion define his journey throughout the series.