She represented Japan at the 2016 Summer Olympics and competed at the 2017 Rugby World Cup in Ireland.

[3] She competed at the 2016 Summer Olympics as a member of the Japan women's national rugby sevens team.

[4][5][6] Tomita was named in the Japanese squad for the 2017 Rugby World Cup.

[7][8] After she returned from a three-match suspension, she helped the Sakura XVs beat Hong Kong in their final World Cup match.

[9][10] In 2021, she had a stint with French club Lons Section Paloise; she became the first Japanese to compete in the Élite 1 competition.