Sayuri Kokushō(国生さゆり or 國生さゆり Kokusho Sayuri, born December 22, 1966 in Kanoya, Kagoshima Prefecture, Japan) is a Japanese actor, singer, and tarento. She was an original member of Onyanko Club. She works for the talent management firm Sony Music Artists. Her debut single, Valentine Kiss, is the most popular Valentine's Day song in Japan.