In 2005, she had a leading role in the Korea / Hong Kong / Japan trilogy titled “Three… Extremes: Box”. This was her film debut, in a segment directed by Takashi Miike, who is garnering attention internationally.
In 2006, Hasegawa had her first leading role in a drama series with “Oishii Propose (A Delicious Proposal)”. In the same year, her acting in “Shusen Kinen Tokubetsu Drama: Himeyuritai to Onaji Senka wo Ikita Shojo no Kiroku - Saigo no Nightingale (War-end Anniversary Drama Special: Memories of a young girl who lived through the same war as the Star Lily Corps - the Last Nightingale)” was described to be superb.
In early 2007, she was in the film “Ai no Rukeichi (Love Never to End)”. This high-profile work was based on a newspaper serial novel that caused a social phenomenon. In the same year, she appeared in “Karei-naru Ichizoku (The Perfect Family)”, which scored viewer ratings of 40%, and her fame spread beyond the borders of Japan to Asia. In 2008, Hasegawa will be in the latest film by director Naomi Kawase, who won the Grand Prize at the Cannes Film Festival in 2007.