- Transdescendence into Nothingness in philosophy of Zen-buddhism2012 | Publication without faculty affiliation
- Breakthrough and Return: Ueda Shizuterus Phenomenology of Self and Meister Eckhart's Thinking2022 | Faculty of Humanities
- Keiji Nishitani: Person as a Mask of Absolute Nothingness2016 | Faculty of Humanities
- Imanishi Kinji's Ethical View of Nature: Recognized World and Integrity2016 | Faculty of Arts
- Imanishi Kinji's Embodied Integrity and Recognition as a Living Strategy2017 | Faculty of Arts
- Mu無is because mu無is not Nothingness (mu無) as a space of Nishida's Pure Experience in his process of self-imagination2018 | Faculty of Humanities