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Around the world, クマガイ (クマガイ , Kumagai ) is a rare primarily masculine, but very infrequently female given name. The given name クマガイ is characteristic of Eastern Asia, particularly China, where it is a very rare principally male, but very infrequently female name. Much less frequently, クマガイ is the last name as well as the forename.
クマガイ is also a name for the fictitious and mythical characters: .