IN A week in which Japan and North Korea have traded threats and insults, it is perhaps worth reminding ourselves of a couple of sporting heroes from these Asian countries. Kushige Kamamoto and Pak Doo-Ik are footballing legends in Japan and North Korea respectively. On April 15, Japanese football fans may raise a glass of Sake to a player that many still believe to be the finest forward ever produced by Japan. It will be Kamamoto’s 70th birthday. Pak Doo-Ik also celebrated his birthday recently, he was 72 in March. Both players made an impact on the world stage. Kamamoto was the leading scorer in the 1968 Olympic Games football tournament as Japan won the bronze medal in Mexico. Pak Doo-Ik scored a memorable…