Theatre Episodes Featuring Mari and Kanata
- 28 Oct 2020: A Goodnight Story
Idols: Kanata, Mari
- 13 Jun 2022: Happy Birthday, Mari-chan!
Idols: Kanata, Mari
- 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