Japan Basketball League
Yashiro was selected for 1999 Universiade while she was an undergraduate at Nippon Sport Science University (4th). Entered Japan Airlines as a cabin crew in 2000, then joined their basketball team JAL Rabbits to become the Rookie of the Year at the second W League of the Women's Japan Basketball League, contributing to the team's third rank. Yashiro was the women's free throw champion in the season of 2002-'03.