Hiroko graduated from Nippon Sport Science University and was formerly with the Keiko Takeya Contemporary Dance Company. She began her journey in contact improvisation in 1997 while studying contemporary dance in France, and has since gone on to study the dance form with teachers such as Nancy Stark Smith, Ray Chung, Nina Martin, and Kirstie Simson. She co-founded Spiral, now known as CINN (Contact Improvisation Nippon Network), in 2003 and the Tokyo Contact Impro Festival in 2007. Hiroko is also a Yamuna Body Rolling Practitioner.