Theatre Episodes About "Hell Triathlon"
- 22 Apr 2020: First, Physical Strength!
Idols: Kanan, Setsuna
- 23 Apr 2020: Work Seriously!
Idols: Dia, Mari
- 26 May 2020: To Reach New Heights
Idols: Nozomi, Umi
- 1 Jun 2020: I'm at that Age
Idols: Hanamaru, Karin
- 16 Jul 2020: Secret Training
Idols: Hanamaru, Hanayo
- 17 Jul 2020: Finished at Last....?
Idols: Kanan, Rin
- 27 Jul 2020: Kasumin’s Perfect Plan : Day 5
Idols: Kanan, Kasumi, Setsuna, Umi, Yoshiko
- 1 Oct 2020: A new one....
Idols: Kanan, Karin
- 10 Oct 2020: Look at Us!
Idols: Chika, Ruby
- 27 Oct 2020: You May Do as You Like!
Idols: Nico, Umi
- 24 Nov 2020: Let's Lift up Everyone's Spirits!!
Idols: Hanamaru, Kanan
- 15 Apr 2021: Refreshing Training!
Idols: Ai, Kanan
- 1 May 2021: Training For the Training?
Idols: Kanan, Riko
- 7 Nov 2021: Preparing For That?
Idols: Riko, Shizuku
- 10 Dec 2021: That Part of Her
Idols: Kasumi, Rin
- 19 Dec 2021: The Perfect.... Hell
Idols: Kanan, Umi
- 22 Apr 2022: Surpass It!
Idols: Kanan, Lanzhu, Umi
- 8 Sep 2022: Don't Hold Back!
Idols: Mia, Ruby
- 13 Sep 2022: I will Complete It!
Idols: Kanan, Shizuku
- 14 Sep 2022: I Can Handle This!
Idols: Kanata, Mia
- 6 Oct 2022: Aqours's Repayment
Idols: Kanan, Mia
- 11 May 2023: The Triathlon Never Ends
Idols: Chika, 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