2021 Happenings
- 3 left groups
- 4 graduations
February 2021
- 12 Takagi Sayuki leaves Hello! Project
- 12 Takagi Sayuki leaves Juice=Juice
November 2021
- 15 Kasahara Momona leaves Hello! Project
- 24 Kanazawa Tomoko leaves Hello! Project
- 24 Kanazawa Tomoko leaves Juice=Juice
December 2021
- 13 Satou Masaki leaves Morning Musume｡
- 13 Satou Masaki leaves Hello! Project