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Throughout the world, カステラ (Castella , Castela , カステラ ) is a rare predominantly feminine, but scarcely masculine first name. The forename カステラ is characteristic of the Democratic Republic of the Congo, where it is a rare female name, Romania, and the United States, where it is a very rare dominantly feminine, but seldom masculine name. More frequently, カステラ is the last name as well as the forename.
カステラ is also a name for the fictitious and mythical characters: .