Meanwhile , Kotani , a future judo 10 - dan , had represented Japan in freestyle wrestling during the 1932 Olympics .
Takasaki was Kano 's son - in - law , and the winner of the All - Japan Championships of 1930 .
Kotani , a future judo 10 - dan , had represented Japan in freestyle wrestling during the 1932 Olympics .
Takasaki was Kano 's son - in - law , and the winner of the All - Japan Championships of 1930 .