Suitei Shōjo was formed in 2001 by Japanese idol duo Rino (Nikaidou Rino) and Lissa (Abe Risa), both born on 9 April 1987 and 8 September 1987 respectively in Japan. The pair entered the J‑pop scene under the guidance of a major label, releasing their debut single "Shouchi no Suke" on 22 August 2001, which established their presence in the industry. Their early career was marked by a series of singles such as "Sekigae" on 24 July 2002 and "Kagi ga Akanai" on 22 January 2003, the latter serving as the ending theme for the horror film Ju‑on: The Grudge. In 2003, the duo released their first album 16‑Sixteen on 1 October, followed by the single "Jouhou" on 21 May 2003 used as the opening for the anime E's Otherwise. The subsequent year saw the release of 17's Heaven on 20 April 2005, which included the single "Chewing Girl" on 19 January 2005. Suitei Shōjo disbanded on 31 March 2006.