- 2022 - 2026 Study on Discretionary Control in Immigration Administration-Toward Overcoming the McLean Case Decision-
- 2021 - 2025 The Comparative Study of Democracy and Constitutional Law in the era of Populism
- 2020 - 2024 司法による憲法解釈の形成において解釈方法論がもたらす作用の複眼的考察
- 2017 - 2021 Fundamental research for Constitutional Interpretation as a Synthesis of Pluralistic and Multi-Layered Interpretations
- 2016 - 2019 Between Law, Religion and Morality: Alternative Reproductive Technology in Muslim Majority Countries
- 2015 - 2018 Interdisciplinary study on cooperative policy making for the creative recovery of the Fukushima nuclear plant accident damage
- 2012 - 2015 Constitutional Analysis on Role of Minorities in Judicial Review
- 2010 - 2014 Comparative Research on the System of Control over Justice in China, Vietnam, Russia and Central Asian Countries
- 2010 - 2012 Regenerative Society and State by Contract: Potential for a Welfare Reform and Environmental Commons
- 2009 - 2011 To Revitalize Democracy Against the Tide of the Globalization : Comparative Study of Constitutional Theory and Politics
- 2005 - 2007 Study on "Transplant" of the Constitutionalism and Its Present Actual Condition in the Central Asian Counties
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