She represented her country at the 2007 World Championships in Athletics in Osaka and is the Japanese high school and junior record holder for the 10,000 metres.
Born in Takasaki, Gunma, she attended Sendai Ikue High School – an institution renowned for its athletic programme.
[2][3] This gained her a debut international selection at the 2006 IAAF World Cross Country Championships (also held in Fukuoka), where the sixteen-year-old came in fourteenth place and helped the Japanese girls to a team bronze medal.
She played a key role in Japan's victory at the competition, winning the fourth stage and closing the gap on Catherine Kirui of then-leaders Kenya.
[11] At the 2011 World Championships in Athletics in Daegu she missed out on qualification in the 5000 m and finished last over 10,000 m. She was the only Japanese to reach the podium at the 2012 Chiba Cross Country in February, taking third behind Kenyan opposition,[12] and repeated that placing at the Fukuoka meet.