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Throughout the world, くまがい (Kumagai , くまがい) is a rare primarily boy's, but scarcely girly first name. The first name くまがい is characteristic of Eastern Asia, particularly China, where it is a very rare primarily boy's, but very infrequently feminine name. More prevalently, くまがい is the last name as well as the forename.
くまがい is also a name for the fictitious and mythical characters: .