帝拳プロモーション
When Takahiro Aō won the world title on March 12, 2009, Teiken Boxing Gym in Tokyo had simultaneously three active world champions. From that time, journalists of sports papers and others came to write it again as the "Golden Age" of Teiken Boxing Gym. However the fatal accident later mentioned in the section entitled #Two fatalities occurred during a Japanese title match just nine days after that, and Teiken Boxing Gym in Tokyo became comparatively estranged from worldly things.