| Birth Date: | 27 April 1982 |
| Birth Place: | Asahikawa, Japan |
| Sport: | Athletics |
| Event: | 400 metres hurdles |
is a Japanese track and field athlete who competes in the 200 metres, the 400 metres and the 400 m hurdles.
Her personal bests are 24.32 in the 200 m achieved at Kobe on April 27, 2008; 38.12 in the 300 metres at Izumo on April 22, 2007; 53.08 in the 400 metres in Osaka on June 30, 2007; and 55.34 in the 400 m hurdles at Osaka on June 26, 2011.
She competed in the 400 metres hurdles at the 2008 Beijing Olympics where she qualified for the second round with the twelfth fastest overall time of 55.82 seconds.
At the 2012 Summer Olympics, she reached the semi-finals of 400 metre hurdles.[1]
| Representing | ||||||
|---|---|---|---|---|---|---|
| 2003 | Asian Championships | Manila, Philippines | 8th | 400 m hurdles | 58.36 | |
| 2005 | Asian Championships | Incheon, South Korea | 4th | 400 m hurdles | 57.23 | |
| bgcolor=cc9966 | 3rd | 4 × 400 m relay | 3:33.54 | |||
| East Asian Games | Macau, China | bgcolor=cc9966 | 3rd | 400 m hurdles | 57.38 | |
| 2006 | Asian Games | Doha, Qatar | bgcolor=silver | 2nd | 400 m hurdles | 56.49 |
| 4th | 4 × 400 m relay | 3:35.08 | ||||
| 2007 | Asian Championships | Amman, Jordan | bgcolor=gold | 1st | 400 m hurdles | 56.74 |
| bgcolor=silver | 2nd | 4 × 400 m relay | 3:33.82 | |||
| World Championships | Osaka, Japan | 26th (h) | 400 m hurdles | 57.01 | ||
| 11th (h) | 4 × 400 m relay | 3:30.17 | ||||
| 2008 | Olympic Games | Beijing, China | 15th (sf) | 400 m hurdles | 56.69 | |
| 15th (h) | 4 × 400 m relay | 3:30.52 | ||||
| 2009 | World Championships | Berlin, Germany | 24th (h) | 400 m hurdles | 56.91 | |
| 14th (h) | 4 × 400 m relay | 3:34.46 | ||||
| Asian Championships | Guangzhou, China | bgcolor=gold | 1st | 400 m hurdles | 56.62 | |
| bgcolor=cc9966 | 3rd | 4 × 400 m relay | 3:31.95 | |||
| 2010 | Asian Games | Guangzhou, China | bgcolor=cc9966 | 3rd | 400 m hurdles | 56.83 |
| 4th | 4 × 400 m relay | 3:31.81 | ||||
| 2011 | Asian Championships | Kobe, Japan | bgcolor=gold | 1st | 400 m hurdles | 56.52 |
| bgcolor=gold | 1st | 4 × 400 m relay | 3:35.00 | |||
| World Championships | Daegu, South Korea | 21st (sf) | 400 m hurdles | 56.87 | ||
| 2012 | Olympic Games | London, United Kingdom | 20th (sf) | 400 m hurdles | 56.25 | |
| 2013 | Asian Championships | Pune, India | bgcolor=gold | 1st | 400 m hurdles | 56.82 |
| bgcolor=cc9966 | 3rd | 4 × 400 m relay | 3:35.72 | |||
| World Championships | Moscow, Russia | 17th (h) | 400 m hurdles | 56.33 | ||
| 2014 | Asian Games | Incheon, South Korea | bgcolor=silver | 2nd | 400 m hurdles | 56.21 |
| 2016 | Olympic Games | Rio de Janeiro, Brazil | 35th (h) | 400 m hurdles | 57.34 | |