She spent her entire professional career playing for clubs in the Nadeshiko League, and was a former international with the Japan women's national football team.

In 2000, she was promoted to Speranza FC Takatsuki from youth team.

[1] In August 2002, Niwata was selected Japan U-20 national team for 2002 U-19 World Championship.

[2] On March 19, 2003, she debuted for Japan national team against Thailand.

This biographical article related to women's association football in Japan is a stub.