- 2023/10 - 現在 International Committee of Historical Sciences Japanese National Committee member
- 2023/10 - 現在 Science Council of Japan member (secretary of the section "Human and Social Sciences")
- 2022/05 - 現在 The National Institute of Science and Technology Policy, Ministry of Education, Culture, Sports, Science and Technology Science and Technology Expert
- 2021/12 - 現在 Sato Foundation for Student Fellowship Selection Committee, member
- 2018/10 - 現在 Japan Student Support Organization, Management Council, member
- 2018/03 - 現在 Japan Student Support Organization, Examination Committee of Institutional Guarantee System, member (president delegate since Dec. 2019, president since Dec. 2020)
- 2017/04 - 現在 Korean-Japanese Historians Congress Steering Committee, member
- 2014/06 - 2024/05 Sendai Parity Foundation (Japan), board member
- 2021/04 - 2024/03 Miyagiken Miyagi Dai'ichi High School (Japan), education advisor
- 2020/10 - 2023/09 Science Council of Japan, associate member
- 2016/04 - 2022/03 Japan Society for the Promotion of Science, "Humanities and Social Sciences Encouragement" Project Committee, member (vice president since July 2018)
- 2008/04 - 2020/10 Franco-Japanese History Association, board member
- 2018/04 - 2019/07 Fushikian Co. Ltd. (Japan), trainer
- 2012/02 - 2019/03 Toshiba Co. Ltd. (Japan), Employee Training Center, trainer
- 2013/08 - 2016/03 Japan Student Support Organization, Scollarship Section Council, member
- 2013/04 - 2016/03 Japan Society for the Promotion of Science, Research Center for Science Systems, program officer
- 2001/11 - 2012/03 Miyagi Prefecture Parity Council (Japan) member (president since March 2006)
- 2003/07 - 2005/06 Sendai City Parity Council (Japan), member (vice president)
- 1998/04 - 2000/03 National Center for University Entrance Examinations (Japan) World History Committee, member