[1] As an amateur, she finished 6th at the 2016 Japan Women's Open, four strokes behind winner Nasa Hataoka.

[2] In 2018, she was runner-up in the Women's Amateur Asia-Pacific and individually at the Queen Sirikit Cup, both times behind Atthaya Thitikul.

She led her team to a win at the 2018 Junior Golf World Cup and a runner-up finish at the 2018 Espirito Santo Trophy in Ireland, behind the United States.

[2] Nishimura turned professional in November 2019 and joined the LPGA of Japan Tour in January 2020.

[4] In her rookie season, her best result was a tie for 3rd at the Walmart NW Arkansas Championship and she finished 48th in the rankings.