Rio Ayanami, also known by the stage names Shinba Ria, Fujisaki Sara, Nitta Misako, and Ria, is a Japanese adult video actress who has worked under multiple aliases throughout her career. She made her debut in the industry under the name Shinba Ria with the production company TeSTAR. She later transitioned to the stage name Fujisaki Sara while affiliated with Mine’s Production. In 2022, she began appearing in uncensored works under the name Ayanami Rio for studios including HEYZO and 1pondo. She has also performed in amateur-style and employee-themed content under the name Nitta Misako for SOD.