Date of Birth: 
Place of Birth: Kitakyūshū, Fukuoka Prefecture, Japan
About Katsuya Onizuka
- Katsuya Onizuka (?? ??, Onizuka Katsuya, born Takashi Onizuka, on March 12, 1970) is a former WBA Super Flyweight champion from Kitakyushu, Japan.
- Onizuka was an extremely popular boxer in Japan, creating a boxing boom in Japan during the early 1990s along with Joichiro Tatsuyoshi.
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