After a great deal of hard work, Jigoro Kano devised this technique while he was still a young man studying at the Tenshin Shinyo Dojo. With him there was a certain Fukushima who was not only an advanced student but a large well-built man as well. It was a great source of displeasure to Kano that regardless of how hard he tried he could not beat this Fukushima. He worked day and night pouring over books on wrestling and sumo and finally came up with the kata guruma which one day enabled him to hurl mighty Fukushima to the floor.