Please note that this is the Detective Conan Wiki's article on Gosho Aoyama's assistant. If you are looking for the article on a manga/anime character then you should head to Eiichi Yamagishi (character).

See also: Gosho Aoyama Eiichi Yamagishi (山岸 栄一, Yamagishi Eiichi) is on of Gosho Aoyama's assistants. He's born in Itoigawa in the Niigata Prefecture, Japan. He also worked on the Detective Conan Special series. Two of the chapters, The Kidnapping Location Case and The White Sandy Beach Murder Case, he wrote for Detective Conan Special were adapted for the anime. It can be that Yōko Okino's manager Yamagishi is named after him.

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