Theatre Episodes Featuring Ruby and Kasumi
- 4 Jun 2020: I need Ruby-chan!
Idols: Kasumi, Ruby
- 25 Jul 2020: Kasumin’s Perfect Plan : Day 3
Idols: Eli, Karin, Kasumi, Rin, Ruby
- 31 May 2022: Castle Garden Tea Party ♪
Idols: Kasumi, Ruby
- 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