- 2023 - 2028 A Comprehensive Study on the Reconstruction of the Historical Image of Koguryo and Balhae
- 2022 - 2025 古代日本と唐王朝における軍事儀礼と支配秩序に関する比較研究
- 2020 - 2023 A Basic Study on putting Koguryo and Bohai from the perspective of East Eurasian History
- 2018 - 2022 古代日本と中国唐・北宋王朝における賤民制の比較研究
- 2015 - 2018 A Study on Introduction Time of Chinese Books in Ancient Japan
- 2015 - 2018 A Comprehensive Study of the Forbidden Troops in Ancient Japan and Tang China
- 2014 - 2017 Comparison historic study on ritual, ceremony, rule structure in the East Asia : About Tang and song change period of China, Korea and Japan
- 2013 - 2017 A Comprehensive Study on Control of the Populace under the Ritsuryo System: A Comparative Study of Ancient Japan and the Tang and the Song Statutes
- 2013 - 2015 A Comprehensive Study of the Traffic Inspection System in Ancient Japan and Tang
- 2013 - 2014 中国唐宋期の令と身分秩序に関する研究 -唐令の復原と北宋天聖令の性質解明を中心に-
- 2010 - 2012 東アジア世界における古代国家軍事構造の研究
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