2016 - 2019 Prague and Dublin: discourse spaces on ghosts and media. Aspects of "translation" between cultures
2015 - 2018 The Study to build ICT general learning environment for a student learning a foreign language particularly German for the first time, and to make a many-readings databas
2014 - 2017 A Comparative Cultural Study of Corporal Punishment : For Constructing a Philosophyical Foundation for Sport without Violence
2012 - 2015 The Creation of a German-learning software for keitai and smartphone users, and an analysis for measuring the software's effect
Tetsuya Kumagai. Lexikon deutscher Kulturen. Forschungsberichte zur Germanistik. 2022. 63. 103-106
A Survey of Second Foreign Languages in Kindai University Second Foreign Languages Researching Group. Kindai university center for liberal arts and foreign language education journal. Foreign Language edition. 2020. 11. 1. 151-174
The Influence of German Spiritualism on Modern Japanese Philosophy: Raphael von Koeber at Tokyo Imperial University
(Science and Spiritualism 1750 - 1930 (at Leeds Trinity University) 2019)