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Acting · b. 1973 · Kyōto, Kyōto Prefecture, Japan
Ryuichi Kosugi (小杉 竜一, Kosugi Ryūichi, born 5 July 1973) is a Japanese comedian born in Kyoto who performs tsukkomi in the comedy duo Black Mayonnaise along with his partner Takashi Yoshida. His standing position is in the left. He is represented by Yoshimoto Kogyo.
