Yamashita decided to pursue a career as an actress when she watched
Ko Shibasaki in the television drama
Orange Days when she was in elementary school. She later auditioned for
Stardust Promotion, which Shibasaki is affiliated with, in 2006. In March 2007 she was chosen as the 12th Rehouse Girl of Mitsui Fudosan Realty. Later in April Yamashita became an exclusive model for the fashion magazine
Hanachu. Her acting debut was in the drama
Koisuru Nichiyōbi: Dai 3 Series in June. In November 2008 Yamashita's first leading role in a terrestrial television drama was the
Ai no Gekijō 40th anniversary programme
Love Letter. Her first leading role in a film was ''
Someday's Dreamers'' later in December. In July 2013, Yamashita played Arisa Morishige in the drama
Limit whose character is bullied and runs away in extreme conditions. Her first regular variety appearances was as an assistant on the television series
A-Studio in April 2014. On August 31, 2022, she left
Stardust Promotion after 16 years and become freelance actress. However, on January 1, 2025, she joined Contents Three. ==Filmography==