Theatre Episodes Featuring Dia and Nico
- 12 Oct 2020: A Nico Nii Course
Idols: Dia, Nico
- 23 Mar 2022: I'll Teach You With Passion!
Idols: Dia, Nico
- 20 Apr 2023: Nico-nii's Photography Course!
Idols: Dia, Nico
- 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