TV Special
Description
In the 2003 television special Operation Return the Treasure, Inspector Koichi Zenigata takes on his customary role as the indefatigable lawman locked in a perpetual chase with the master thief Lupin III. The story begins with Lupin successfully robbing a casino in Moscow directly under Zenigata's watch, immediately establishing the inspector's primary challenge in the narrative. As Lupin embarks on an unusual assignment to return six famous stolen treasures to their original owners in exchange for a coveted gem called the Trick Diamond, Zenigata's relentless pursuit serves as the principal recurring obstacle that complicates and threatens the entire mission.

Zenigata is a high-ranking inspector with the International Criminal Police Organization, having joined the international force specifically to pursue Lupin after an early career with the Tokyo Metropolitan Police. He comes from a long line of celebrated detectives, a legacy he carries with deep pride. His entire life has been consumed by the single goal of capturing Lupin, leaving him without a settled personal life or family ties.

His personality is a complex blend of fierce competence and comedic clumsiness. He operates with a deeply ingrained, old-fashioned sense of justice and honor, which makes him resistant to corruption and inspires genuine respect from his colleagues, even when his obsession leads to spectacular failures. Underneath his gruff exterior, Zenigata is a highly sensitive and emotional person, often weeping in frustration or relief when Lupin escapes or when he believes the thief might be in genuine danger. In Operation Return the Treasure, his pursuit is particularly sharp and focused, and he demonstrates a peak of resourcefulness by managing to apprehend Lupin three separate times over the course of the story, a remarkable feat in their long history.

His defining relationship is his intense rivalry with Lupin. Although he vehemently refuses to acknowledge it openly, there is an unspoken mutual respect between the two men. Zenigata considers Lupin his personal prey and shows little interest in capturing Lupin's associates, Jigen, Fujiko, and Goemon, whenever the master thief himself is nearby. This personal code dictates that only he is worthy of bringing Lupin to justice.

Zenigata is highly skilled in hand-to-hand combat, proficient in judo and karate, and is an expert marksman with a Colt pistol. His most iconic ability is throwing a pair of handcuffs attached to a long rope with uncanny accuracy to snare fugitives from a great distance. He is also a gifted inventor of anti-Lupin gadgets and possesses a seemingly supernatural ability to anticipate the thief's movements through sheer intuition and obsessive study. His combination of sharp deductive reasoning, stubborn endurance, and surprising combat prowess makes him a genuinely formidable adversary, even if his quarry always manages to slip away in the end.