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In the entire world, Sayu (Sal , Sayu , Саю ) is a common epicene given name. The first name Sayu is characteristic of Israel, where it is quite a common primarily male, but very infrequently female name, Tunisia, where it is quite a common epicene name, and Mongolia (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in India, Indonesia, and the United States. Also, Sayu is the last name as well as the forename.
Sayu is also a name for the fictitious and mythical characters: Sayu , the musical character in the musical Death Note: The Musical; Sal Maroni , the fictional character throughout the DC Universe, The Dark Knight; Sal Marcano , the fictional character, Mafia III; Big Pussy Bonpensiero , the fictional character from The Sopranos and Sal Martin , the fictional character from the British soap opera EastEnders, among other works.