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Worldwide, Aizi (爱子 , Aizi ) is a rare gender-neutral first name. The forename Aizi is habitual in Morocco, where it is a rare boy's name, China, where it is a very rare dominantly feminine, but uncommonly boy's name, and Indonesia, where it is a very rare boy's name. Likewise, Aizi is the last name as well as the forename.
Aizi is also a name for the fictitious and mythical characters: Aiko , the Hunie character, HuniePop; Aiko Senoo , the Ojamajo Doremi character and Aiko Iwase , character in Bakuman.