Yua Aida (あいだゆあ - Aida Yua) (born August 12, 1984 in Aichi Prefecture, Japan) is a Japanese model and adult film actress who took the AV world by storm when she debuted in photo layouts in 2003, and the January 2004 DVD Pichi Pichi. Appearing in over 30 DVDs within a year, as of 2006, along with Sora Aoi, she is the most popular figure of the S1 studio. According to her official website, her hobbies are oil painting and tennis. On March 20, 2006 she was awarded the Japanese adult grand prix actress award for the year of 2005.