University of Tsukuba
Tsuda had been Professor in the Doctoral Program in Modern Cultures and Public Policies in the Graduate School of Humanities and Social Sciences at the University of Tsukuba since 2001. He retired from the University of Tsukuba and founded the Institute of Peace Linguistics in Ibaraki Prefecture in 2014. He is currently Professor in the Department of English at Matsuyama University in Ehime Prefecture.