He won the silver medal in the men's 1500m freestyle at the 1952 Summer Olympics in Helsinki, Finland.

That time was bettered the same day, however, by compatriot Hironoshin Furuhashi at the American Swimming Championships in Los Angeles, California.

He continued swimming at Nihon University, which he entered in 1946 and graduated in 1951 with a law degree.

In 1987 he was awarded the Order of the Purple Ribbon "Shiju Hosho", and in 1992 inducted into the International Swimming Hall of Fame.

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