- 2022 - 2025 家事事件の実務的・現代的課題をふまえた実体法理の再構築
- 2019 - 2022 Reconstruction of substantive law approached from the practical issues in family affairs cases
- 2016 - 2019 Reflections on Conflict-of-Laws Issues with Regard to International Aspects of Succession Substitutes
- 2016 - 2019 Restructuring of familyl law, considering the practice and the procedure
- 2016 - 2019 Study on the contract for same-sex couples -Comparative analysis with Pacs in France
- 2012 - 2016 A comparative and socio-legal research on the multiple form and diversity of the family and law
- 2012 - 2016 A comparative study on legal treatment of same-sex couple: toward a reconsideration of Japanese marriage law
- 2010 - 2011 Defining the Freedom of Contract between Couple : A Comparative Study of Japanese and French Laws
- 2007 - 2008 私生活の自由を確保する「カップル」保護の法理論:法律婚の相対化を通じて
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