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~The Avalanche Incident (10 Months Ago): Inspector Kansuke Yamato, while
pursuing a parolee in the Yatsugatake mountains, gets shot in the eye and
caught in an avalanche, losing his memory of the event.

Present-Day Mystery: A researcher at a Nobeyama radio observatory is
attacked, leading Kansuke and Detective Yui Uehara to investigate, where
Kansuke's injured eye flares up due to the large antenna.

Kogoro's Connection: Kogoro receives a call from his former colleague,
"Wani" (Sametani), who was investigating the avalanche but is murdered
before he can share details, prompting Kogoro to go to Nagano.

Expanding Conspiracy: Conan and Kogoro find the case ties into an 8yr old
gun shop robbery and a suicidal biathlete, drawing in more police (PSB, Nagano trio), a sniper, and a dangerous game of cat-and-mouse.

Themes: The film delves into cycles of vengeance, unresolved trauma, the
symbolism of the "one eye" (injury/insight), and the interconnectedness of
characters through past choices, with heavy emotional beats and flashbacks.

Focus: The story heavily involves the Nagano Police (Kansuke, Yui,
Morofushi) and PSB, with Conan using his gadgets (like AR glasses) to
uncover fragmented memories and motives behind the complex, bureaucratic
maze of past events.