On this day · October 21
- 2013 Mashiro Kana leaves Hello! Project
- 2013 Mashiro Kana leaves HelloPro Kenshuusei
- 2013 Mashiro Kana retires from show business
- 2009 Melon Kinenbi releases “Seishun・on the Road”
Happenings
- 2026-06-24 Makino Maria leaves Hello! Project
- 2026-06-24 Makino Maria leaves Morning Musume｡
- 2026-06-16 Takase Kurumi leaves Hello! Project
- 2025-12-05 Haga Akane leaves Hello! Project
- 2025-12-05 Haga Akane leaves Morning Musume｡
- 2025-08-14 Michishige Sayumi retires from show business
- 2025-07-08 Ikuta Erina leaves Morning Musume｡
- 2025-07-08 Ikuta Erina leaves Hello! Project
- 2024-12-06 Ishida Ayumi leaves Morning Musume｡
- 2024-12-06 Ishida Ayumi leaves Hello! Project
- 2024-06-19 Sasaki Rikako leaves ANGERME
- 2024-06-19 Sasaki Rikako leaves Hello! Project