Saori Hara is a former Japanese AV idol, model and actress who has also used the name Mai Nanami and most recently Miyabi Matsunoi or Miyavi Matsunoi. Saori Hara was born in Hiroshima Prefecture to a Japanese mother and a father of mixed German-Japanese parentage. Hara started her career as a junior idol under the name Mai Nanami. As a teenager, she sang the theme song Spicy Days for the animated TV show The Marshmallow Times on TV Osaka in 2004. She also had parts in two movies in 2005, the March TV drama The Dream of Delinquent Boys for TBS, and the April theatrical release, horse-racing melodrama Haru Urara, which was later released as a DVD. She had also made a bikini-model photobook, Mai Nanami First Photobook, in May 2005 and a non-nude DVD titled Mai Nanami: Yamagishi Shin Digital Movie Museum which was released in August 2005. As Nanami, she also played the female lead in another mainstream movie that was due to be released in Japan in 2006 but had its debut at the American Film Market in Santa Monica, California in November 2005 as Deep Sea Monster Reigo. The film was eventually released in Japan as Reigo: The Deep Sea Monster vs the Battleship Yamato. After a long hiatus, she re-emerged as Saori Hara in August 2008 and appeared in a non-nude gravure video titled Clear Water. The next month, in September, she posed nude for the first time in the Japanese men's magazine Sabra, and it was announced that she was contracted to the Soft On Demand adult video studio. She became the face of the SOD group in its anti-STD campaign in November 2008, a role formerly played by long-time SOD AV actress Nana Natsume. Hara's first adult video was released by SOD in January 2009 with the title Real Celebrity Saori Hara: Miraculous AV Debut and was reported to have sold 100,000 copies.

About the same time as her AV debut, Hara posed for a set of nude photos set in Tokyo public places by photographer Kishin Shinoyama which was published January 28, 2009, by Asahi Press as NO NUDE by KISHIN 1 20XX TOKYO. Shinoyama has said that he likes working with porn stars because they have no problems with nudity. However, both Shinoyama and Hara were charged by Tokyo authorities with public indecency.

Also in early 2009, Hara was in the TV Asahi movie Mission Section Chief Hitoshi Tadano: Season 4 Special, a tie-in to the fourth season of the manga-based TV show.

Her May 2009 hamedori adult video for SOD, Real Celebrity Saori Hara: Brown Eyes, directed by Company Matsuo, had the quarter-German Hara traveling to Germany for six days to explore her roots. The SOD studio celebrated the end of Hara's first year with the company with the four-hour cosplay video, Real Celebrity Saori Hara: 8 Changes and Sweet Sex, where she plays eight different characters.

Not long after her AV debut, Hara had a role in the Nikkatsu sex comedy about the porn industry, Lala Pipo, written by Tetsuya Nakashima, which reached theatres in February 2009. In April of that same year, Hara had a featured part in the disaster-parody comedy Saikin-rettō and also sang the theme song for the movie. July 2009 saw her play the protagonist in kunoichi sexploitation V-Cinema film Female Ninja Spy that was also released in an AV version.