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All over the world, Мацуи (Matsui , Matsuy , Macui ) is a rare primarily masculine, but very infrequently girly first name. The first name Мацуи is characteristic of Japan, where it is a very rare male name, China, where it is a very rare predominantly masculine, but very infrequently girly name, and Indonesia, where it is a very rare boy's name. Likewise, Мацуи is the last name as well as the forename.
Мацуи is also a name for the fictitious and mythical characters: .