Career
Background
The International Judo Federation (IJF) was founded in 1951, and five years later IJF organized the first World Judo Championships, held in Tokyo on 5 March 1956. Contestants
The 1956 championship had 31 competitors from 21 countries. Natsui"s matches
In the first round Natsui took only 3 seconds to eliminate the contestant from Cambodia, with the shoulder throw seoi nage.
The match against Woodrey from Belgium in round 3 lasted 44 seconds, with victory going to Natsui.
In total, Natsui reached the final with a total combined match time of only 63 seconds. The final between Natsui and Yoshimatsu ended with victory to Natsui.
Natsui competed several times at the in Nippon Budokan in Tokyo—one of the three major tournaments, together with the Olympic Games and the World Championships. In 1951 he finished 8th, he finished 16th in 1952, and 8th again in 1953.
The where not held in 1956 because of the inaugural World Championship competition.