Dr. Koyanagi

Gender: Male
Hair Color: ?
Rank #26,395
Rank #8,298
Dr. Koyanagi main image

Dr. Koyanagi, Tadashi's uncle, is a talented scientist who has his own theories about the current happenings in Japan. He is willing to do whatever it takes to complete his research.

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Anime Roles

Gyo Secondary

Manga Roles

Gyo Secondary

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