In 1981, when IWE collapsed, Hamaguchi teamed with Kimura and Isamu Teranishi in an "invasion" angle in New Japan Pro-Wrestling.

When the angle was dropped, Hamaguchi joined Riki Choshu in forming the original Ishin Gundan rebel stable.

Hamaguchi retired in 1995, after his team lost the title, to dedicate full-time to his dojo, today recognized as one of the premier independent wrestling schools in Japan.

Famous pros trained by him include Satoshi Kojima, Shinjiro Otani, Shingo Takagi, Tetsuya Naito, Bushi and Takao Omori.

She is a two timer Olympic bronze medalist in 72 kg weight class and she has won the FILA Wrestling World Championship 5 times.