In 2006, she finished second in the opening round of the 1000 metres, then second in her quarterfinal, advancing to the semifinals, where she placed fifth, to end up ninth overall.

In the 1000 metres, she finished second in the opening round, then fourth in the quarterfinals, failing to advance.

She again participated in the 3000 metre relay team, which finished third in the semifinals and fourth in the B Final, ending up seventh overall.

[1] As of 2013, Ozawa's best performance at the World Championships is fourth, as a member of the Japanese relay team in 2005.

[2] As of 2013, Ozawa has six ISU Short Track Speed Skating World Cup podium finishes, all as part of the Japanese relay team.