TV Special
Description
Officer Takagi, whose full name is Wataru Takagi, is a police sergeant and detective with the Tokyo Metropolitan Police Department's Criminal Investigation First Division. He appears as a supporting character in the crossover anime Lupin III vs. Detective Conan, which includes the 2009 television special and the 2013 theatrical film. In these productions he serves as one of the representatives of the Detective Conan side of the crossover, appearing alongside his usual colleagues from the Tokyo police force.

In the crossover film, Takagi's main role in the story comes when the Tokyo police, puzzled by the behavior of the master thief Lupin the Third, consult Inspector Koichi Zenigata of the ICPO. Takagi, along with his colleague Miwako Sato, volunteers to assist Zenigata in the operation to prevent Lupin from stealing the Cherry Sapphire gem. His most consequential moment in the plot is passive rather than active: despite Zenigata's careful precautions, Lupin manages to disguise himself as Takagi and, using that stolen identity, seizes the gem and escapes. This turn of events places Takagi at the center of the operation's failure and underscores the gap between a routine officer and a criminal of Lupin's extraordinary skill.

Takagi's personality is defined by his good nature, politeness, and dedication to his duties. He is earnest and honorable, with a strong sense of justice and a reliable intuition. Although he is initially self-conscious and somewhat bumbling in his career, he demonstrates genuine commitment to protecting others, a trait rooted both in his professional responsibilities and in a self-sacrificing side to his character. He treats civilians, including children, with kindness and respect, and he is among the officers most willing to trust the judgment of the young detective Conan Edogawa, often listening to Conan's suggestions at crime scenes rather than dismissing them.

His motivations are those of a devoted police officer: to uphold the law, serve justice, and safeguard the public. In the crossover, this translates into straightforward professional motivation, as he volunteers for the mission against Lupin out of duty and a desire to support the larger police effort. He is not driven by personal rivalry with Lupin, unlike Zenigata; his interest in the case is that of an ordinary detective contributing to a complex operation.

Takagi's key relationships within the crossover are rooted in his established role from the Detective Conan series. He works under Inspector Juzo Megure and has a close working relationship with Miwako Sato, his senior colleague, whom he deeply respects and with whom he shares a romantic connection. In the Lupin crossover, he and Sato act as a team in supporting Zenigata, reflecting the collaborative dynamics of their unit. His interactions with Conan are marked by mutual trust, as Conan relies on Takagi more than on most other police officers, and Takagi in turn takes the boy seriously.

In terms of development, the Lupin III vs. Detective Conan crossover does not substantially change Takagi as a character; rather, it draws on his established background as an earnest and capable but often overlooked detective. His most notable moment in the film is being impersonated by Lupin, which serves as a reminder of his vulnerability when facing adversaries far more experienced in deception and disguise. In the broader continuity of the Detective Conan series, he matures from a self-conscious newcomer into a more reliable and confident officer, but within the crossover itself he mainly functions as part of the police ensemble.

As for abilities, Takagi is a competent investigator suited to standard police work such as gathering evidence, conducting surveillance, and participating in arrests. He does not display any extraordinary physical prowess or exceptional combat skill in the crossover, and his shooting accuracy is not demonstrated. His strengths lie in his diligence, his teamwork, and his willingness to follow promising leads, even when those leads come from unconventional sources such as Conan. His main weakness in the story is his predictability, which makes him an easy target for impersonation by a master criminal capable of copying his appearance and mannerisms. Overall, he serves as a sympathetic and dependable police presence whose earnestness is both his greatest asset and the quality that Lupin exploits.