In the late 70s Endo moved back to Tokyo and was an associate professor and later a full professor (1986-) at the Tokyo University of Agriculture and Technology between 1979 and 1997.
During his career, Endo moved back to Tokyo in the late 1970s and held academic positions, including associate professor and full professor (1986-) at the Tokyo University of Agriculture and Technology, from 1979 to 1997.