Sayuri Katayama (片山 さゆり, Katayama Sayuri; previously 片山 沙有里) born July 3, 1979 is a Japanese singer, stage actress and songwriter. She has played the role of Kou Seiya in the Sailor Moon musicals. As a songwriter, she is known as Sayuri.
Source: “Sayuri Katayama”, English Wikipedia (CC BY-SA 4.0), excerpt