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All around the world, Sirou (思柔 , Sirou , シロウ ) is a rare gender-neutral first name. The first name Sirou is characteristic of France, where it is a very rare masculine name, and China, where it is a very rare dominantly female, but uncommonly masculine name. More frequently, Sirou is the last name as well as the forename.
Sirou is also a name for the fictitious and mythical characters: Shirō Emiya , the fictional character from the Fate series, Fate/stay night and Sunfire , the fictional character in Marvel Comics, Uncanny X-Men.