Junichiro Tanizaki serves as a member of the Armed Detective Agency. He possesses a slim build, distinctive orange hair parted centrally with downward-sweeping spikes, hazel eyes, and pale skin. A light grey bobby pin is typically clipped on his left side, complemented by matching earrings. His standard attire features an oversized off-white V-necked sweater displaying a black collar stripe, worn over a black tank top, paired with light blue pants and brown shoes, often accented by a red sweater tied around his waist. During the agency's framing as terrorists, he adopted a white hood suit and later wore military police riot gear complete with black boots and gloves. Following the cannibalism incident, he appeared in a formal suit for the agency's celebration. Considered one of the agency's more "average" members, Tanizaki lacks the overt eccentricities of colleagues but participates in missions when directed by seniors like Doppo Kunikida. He expresses feelings of mediocrity stemming from perceived limitations of his ability in combat, though he reassures others of his capacity to endure their perilous work. He readily apologizes for necessary harsh actions, exemplified by his behavior during Atsushi Nakajima's entrance exam. Tanizaki adapts effectively to reconnaissance using his illusion-based ability and demonstrates convincing acting skills, such as impersonating a bomber. Despite occasional nervousness—evident during missions involving the Ministry of Home Affairs' library or solo plane flights—he consistently prioritizes the agency's safety. His morality proves fragile; he readily embraces harmful actions like endangering civilians, attempting to kill enemies, or contemplating defection to the Port Mafia if it safeguards the agency or his sister Naomi. This impulsiveness risks endangering colleagues, the agency's reputation, and Yokohama. Tanizaki exhibits extreme violence towards those threatening Naomi, discarding morality, ego, or pride in her defense, as shown when he threatened the Port Mafia's Black Lizard commanders. His ability, Light Snow, generates realistic illusions within a specific area marked by falling snowflakes. It manipulates light and shadow to alter perceptions of objects, people, or environments, proving useful for infiltration, ambushes, and misdirection. The ability shares its name with the English-translated title of Tanizaki's real-life namesake's novel *The Makioka Sisters* (*Sasameyuki*). Tanizaki also possesses cooking skills, notably preparing dishes like Hayashi rice. Tanizaki lives with his younger sister Naomi, though the fate of their parents remains undisclosed. He was a student before joining the agency and underwent a severe entrance exam that induced underlying trauma, leading him to suppress memories of the event. His backstory lacks further elaboration in official media. Development across story arcs shows Tanizaki engaging in battles against adversaries like the Port Mafia and the Guild. During the Hunting Dogs arc, his fragility surfaces when the agency is framed; he dons military gear and participates in high-stakes actions to clear their name. His loyalty to Naomi drives key decisions, such as shielding her from harm or retaliating against threats. Literary connections to his real-life counterpart, Jun'ichirō Tanizaki (1886–1965), inform his character arc. Themes of illusion and obsession in the author's works—such as *A Portrait of Shunkin* and *Naomi*—parallel Tanizaki's ability and devotion to his sister. The author's shift from Western fascination to traditional Japanese aesthetics, explored in essays like *In Praise of Shadows*, fuels theories that Tanizaki may defect to the Port Mafia (associated with "shadows") from the agency (associated with "light"). Additionally, unreliable narration in the author's stories supports fan speculation that Tanizaki downplays his combat prowess or that Naomi might be an illusion he created after her death. The author's recurring motif of "sculpting" women into ideals, followed by their dominance over the sculptor, further aligns with Naomi's autonomy in defying Tanizaki. Tanizaki dislikes earthquakes, a trait shared with his namesake, who developed this fear after the 1894 Tokyo earthquake. His preferences include pike congers, Chinese cuisine, and cats.