Tina Yuzuki, also known as Rio, is a Japanese actress, singer and former AV idol who debuted as an AV actress in 2005, appearing in videos produced by the Max-A and S1 studios. After starring in AVs in various genres during her first year in the industry, she won an industry award as Best New Actress for 2006. Since late 2007, she has used the stage name of Rio. In 2009, she transferred to IdeaPocket and became one of the studio's most prominent actresses. After a career that spanned over a decade and nearly 500 adult films, she retired in January 2016.