In the entire world, Kaibun (Kaibun 
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) is a rare mostly female, but infrequently boy's first name. The forename Kaibun is characteristic of Indonesia, where it is a very rare masculine name, India, where it is a very rare female name, and China, where it is a very rare dominantly female, but infrequently boy's name. Much less frequently, Kaibun is the last name as well as the forename.