Theatre Episodes Featuring Rina and Dia
- 8 Sep 2020: Fight, Dia-san!
Idols: Dia, Rina
- 27 Sep 2021: Discipline!!
Idols: Dia, Rina
- 6 Apr 2023: The Flavor of Gold Leaf?
Idols: Dia, Rina
- 21 Jun 2023: Favorite Foods?
Idols: Dia, Rina
- 25 Jun 2023: Until the Last Minute!
Idols: Dia, Honoka, Kanan, Kasumi, Kotori, Mari, Rina, Shioriko, Shizuku, Umi
- 30 Jun 2023: Off We Go!
Idols: Ai, Ayumu, Chika, Dia, Eli, Emma, Hanamaru, Hanayo, Honoka, Kanan, Kanata, Karin, Kasumi, Kotori, Lanzhu, Maki, Mari, Mia, Nico, Nozomi, Riko, Rina, Rin, Ruby, Setsuna, Shioriko, Shizuku, Umi, Yoshiko, You