[2] Kojima became the coach of the Japanese Olympic team in 1970, succeeding Hirobumi Daimatsu, whose women's team had won a gold medal at the 1964 Summer Olympics in Tokyo.
[2] Under Kojima, Japan's women's volleyball team won silver in 1972, losing to the Soviet Union in a match played in the aftermath of the Munich massacre.
[2] His team was favored to win gold in the 1980 Summer Olympics in Moscow, but Japan boycotted the games following the Soviet invasion of Afghanistan.
[2] Kojima later became the general director for the Japanese athletes at the 1992 Summer Olympics in Barcelona.
[2] Koji Kojima died at a hospital from pneumonia on May 27, 2014, at the age of 83.