While she was a high school student, she left the league.

After graduating from high school, she joined Tasaki Perule FC in 2003.

However, the club was disbanded in 2008 due to financial strain.

In 2012, she moved to Albirex Niigata and retired end of season.

On May 21, 2005, when Nakaoka was 20 years old, she debuted for Japan national team against New Zealand.