- 2021/10 - 現在 Seikei University
- 2021/04 - 現在 Hosei University
- 2015/04 - 現在 Meiji University Organization for the Strategic Coordination of Research and Intellectual Properties
- 2011/07 - 現在 市川市史編さん事業 専門員
- 2021/04 - 2022/03 Teikyo University Faculty of Liberal Arts Department of History
- 2015/04 - 2017/03 Ochanomizu University
- 2014/04 - 2015/09 Ochanomizu University Faculty of Letters and Education
- 2013/04 - 2015/03 Meiji University Organization for the Strategic Coordination of Research and Intellectual Properties
- 2012/04 - 2013/03 Ochanomizu University Center for Comparative Japanese Studies
- 2007/05 - 2011/03 Ochanomizu University
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