Nakachi was born in Chiba Prefecture on 16 December 1980.

She was selected Best Young Player award in 1997 season.

She played 187 matches in L.League and she was selected Best Eleven 4 times (2000, 2001, 2003 and 2006).

In December 1997, when Nakachi was 16 years old, she was selected Japan national team for 1997 AFC Championship.

She played at 1998, 2002 Asian Games, 2001 and 2003 AFC Championship.