Actress Masami Nagasawa was born on June 3, 1987, in Shizuoka Prefecture. She entered the entertainment industry after winning the grand prize at the 5th Toho Cinderella Audition at the age of 12, the youngest ever. She made her film debut in 2000 in "Crossfire" and her drama debut in "Secret: The Will of Lawyer Mariko Sako." Around this time, she also worked as an exclusive model for the teen magazine "Pichi Lemon." In 2003, she won the Newcomer of the Year Award at the 27th Japan Academy Awards for her first starring role in "Robocon." She then played the heroine with leukemia in "Crying Out Love, In the Center of the World" in 2004, winning numerous film awards, including the Best Supporting Actress Award at the 28th Japan Academy Awards. The film was a box office hit, grossing 8.5 billion yen. She continued to appear in popular films, winning the Best Actress Award at the 30th Japan Academy Awards for her role in "Nada Sou Sou" in 2006.

She is currently the commercial character for the fashion brand "NATURAL BEAUTY BASIC."

She appears on the cover of "What's a FANTASISTA UTAMARO!? by "QUOTATION," which was launched on May 24th and is edited by artist Fantasista Utamaro.