- 2016 - 2020 Literary Traditions in the Multiculture of South Asian Multilingual Society
- 2013 - 2017 Comprehensive Study of Symbiosis in Indian and Buddhist Thoughts: With reference to the construction of thoughts and its transformation
- 2009 - 2014 New method of analyzing and describing the history of Indian literature in layered multilingualism.
- 2008 - 2010 A study on the rhythmical construction of the Hindi and Urdu metre and its origin in Persian prosody
- 2007 - 2009 Investigation of religious pluralism and the concept of tolerance in India
- 2005 - 2008 Historical Movement and Present Phase of Literature in a Multilingual Society : in the case of Indian Literature.
- 2006 - 2008 Islamic Cultural Representaions in the Global Age
- 2001 - 2004 The Rasa Theory as a tradition of Sanskrit literature in the Indian later medieval Poetics
- 2002 - 2004 Study on interdisciplinary of Medieval India
- 1997 - 2000 Poets at Various Social Positions in the History of Indian Literature
- 1994 - 1994 17世紀インドの詩論書『カヴィ・プリヤ-』の諸写本比較研究
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