 He retired in 1976 and became an elder of the Japan Sumo Association, working as a coach at Sadogatake stable until his retirement in 2009.Hasegawa joined professional sumo in March 1960 at the age of 15, recruited by the former "sekiwake" Kotonishiki.Unusually, he fought under his own surname for his entire career (he is the only top division wrestler from Sadogatake stable not to have adopted a "shikona" or fighting name with the prefix "Koto").