In August 2015, when Yamashita was 19 years old, she was selected the Japan national team for 2015 East Asian Cup. At this competition, on August 4, she debuted against South Korea. In 2018, she played at 2018 Asian Cup and Japan won the championship. She also played at 2018 Asian Games and Japan won the championship. In 2019, she was selected Japan for 2019 World Cup.