Yutaka Ochi

Ochi is primarily characterized through his professional position and participation in the observatory investigation. He knows Agasa from their university years, giving Conan's group a personal connection to the research facility.

The film does not develop an extensive independent personality arc for him, instead using his knowledge and position at Nobeyama as part of the investigation surrounding the attack.

Ochi is an academic and astronomy professional working at the Nobeyama National Astronomical Observatory. His expertise concerns the scientific environment and equipment at the facility rather than criminal investigation.

He has no established combat skills or extraordinary abilities.

Ochi is present when the investigation into Madoka's assault draws the Nagano police to Nobeyama. The facility becomes important when its enormous radio telescope activates and causes Yamato's damaged left eye to experience severe pain.

The resulting investigation expands far beyond the initial assault, connecting the observatory incident to an older robbery case, undercover operations, and the avalanche that nearly killed Yamato.

Ochi remains associated principally with the observatory side of the case while Conan, the police, and Public Security investigate the larger conspiracy.

Madoka Tsuburai is Ochi's colleague at the Nobeyama National Astronomical Observatory.

Hiroshi Agasa is Ochi's senior from their university years.

Kansuke Yamato becomes involved with Ochi through the police investigation at the observatory.