She has recently been appearing in numerous films, radio, and television programs including the recent live action TV drama adaptation of the Jigoku Shoujo series. She has also done voice work, appearing in the anime OVA Kyo no Gononi as Chika Koizumi. She was formerly a member of Japanese musical group Sweet Kiss before it disbanded on May 12, 2006 to be replaced by the group Chase.
As a gravure junior idol
She gained fame for her professional modeling as a U-15 idol. Her bikini pictures soon received widespread distribution over the World Wide Web. In the aftermath of this incident, Saaya's manager said they will refrain from having more bikini photoshoots of her, although she has done more bikini photoshoots since then.
- Kyuyo Meisai (TV Tokyo)
- Gekito! Idol Yokibou (July 2006)
- Government Crime Investigation Agent Zaizen Jotaro (TV Asahi)
- Jigoku Shoujo (Live action adaptation, playing as Tsugumi Shibata, started airing across Nippon TV from November 4 2006)
- Manga-Kissa Toshi-Densetsu Noroi no Manna san (BS-i)
- Gekito! Idol Yokibou (Osaka Broadcasting Corporation, released on July 2006)
- Kyo no Gononi (as Chika Koizumi; produced by avex)
- Note: She only sang for the Sweet Kiss version of the opening and ending songs and did not play Chika in the OVA itself. Mai Kadowaki played Chika.
- God's Left Hand, Devil's Right Hand or Kami no hidarite Akuma no migite (神の左手 悪魔の右手) 2006.
- Shibuya Kaidan (渋谷怪談 THEリアル都市伝説) 2006. official site
- Kani Goalkeeper （かにゴールキーパー） 2006. official site
- Kuchisake Onna (口裂け女) 2007
- Pussy Soup or Neko Râmen Taishô (猫ラーメン大将) 2008 official site
- It's your CHOICE! episode 2
- Chase Me! (1st single)
- Saaya, Tsubomi (紗綾「ボミ」) ISBN 4-08-780435-6,2005.
- Saaya, Saaya 11 years old (紗綾「紗綾11歳」) ISBN 4-8211-2660-5, 2005.
- Saaya, Saaya 11 years old Fugue (紗綾「さあや11歳(フーガ) 」)
- Saaya, Pastel Time. (紗綾「ぱすてるたいむ 「紗綾」」)
- 紗綾 さあや11歳 [Saaya at 11] (February 2005, Elk Heart Promotion) ISBN 4-341-78004-2
- 入江紗綾 紗綾11歳 [Saaya at 11] (May 2005, Bunkasha) ISBN 4-8211-3091-2
- Little Legend 紗綾in沖縄 [Saaya in Okinawa] (October 2005, Elk Heart Promotion)
- BLOOM～さあやから入江紗綾へ～ [From Saaya to Saaya Irie] (June 2006, Elk Heart Promotion) ISBN 4-902972-30-1
- アクアガール 入江紗綾 [Aqua Girl] (December 2006, Elk Heart Promotion) ISBN 4-903590-29-1
- アクアガール2 入江紗綾 [Aqua Girl 2] (February 2007, Elk Heart Promotion) ISBN 4903590431
- 紗綾の休日 [Saaya's Holiday] (December 2006, King Records)
- Pure Smile (December 2007, Takeshobo)
- 紗綾 THE BEST (March 2008, E-Net Frontier)
- 紗綾 SA-YA! (April 2008, E-Net Frontier)
- Sweet Kiss (May 2005, Elk Heart Promotion) ISBN 4-341-78006-9
- Very Sweet Vol.2 (December 2005, Elk Heart Promotion)
- 激闘!アイドル予備校 紗綾・留奈・梨央 [Battle! Idol Prep-School - Saaya, Runa, Rio] (September 2006, E-Net Frontier)
- Official site Saaya (Japanese) (visited Dec 22, 2009)
- Official weblog Saaya (Japanese)
- Chinese site (Chinese)