Amagi Pass.

Japan in the 1940s. A high school boy went into a magic encounter with Ozuka Hana, a geisha (pub-girl) when he traveled through Amagi Pass. A mysterious murder took place afterwards, an Ozuka was held responsible. 40 years later, the boy, who became a printing shop owner, was visited by a retired policeman who came from Amagi Pass. The truth then started to reveal itself.