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 the latter part of the 1970s, Endo relocated to Tokyo and served as a professor at the Tokyo University of Agriculture and Technology, initially holding an associate professorship before advancing to full professor in 1986, a position he held until 1997.