Born on August 26, 1987, in Tokyo, Japan, Nagasawa began her career in the entertainment industry at a young age. She started modeling while still in high school and eventually transitioned to acting, landing her breakthrough role in the 2007 television drama "Hanazono Family."

When she's not working, Nagasawa enjoys a relatively low-key lifestyle. She is an avid traveler and has been known to share her adventures on social media. Nagasawa is also passionate about fashion, often showcasing her personal style through her Instagram and public appearances.

In addition to her acting career, Nagasawa is committed to giving back to her community. She has supported various charitable causes, including organizations focused on education and women's empowerment.