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Globally, Kaigo (Kaigo ) is a very rare unisex first name. Also, Kaigo is the last name as well as the forename.
カイゴ, 凯哥, 凯戈, 开各, 开哥, 开戈, 海後, 铠哥, 铠戈, 锴哥, and 锴戈