Doors, Doors, Doors! Open the Door to Summer Vacation!
- Episode aired May 18, 2022
Sôichi Abe
- Kotone's grandfather
- (voice)
- …
Hikaru Akao
- Tsuzumi Kazairo
- (voice)
Natsuki Hanae
- Momo-chan
- (voice)
Yûki Hoshi
- Kotone's father
- (voice)
Honoka Inoue
- Kotone Kazairo
- (voice)
Manaka Iwami
- Rakira
- (voice)
Natsumi Kawaida
- Rufria
- (voice)
Honoka Kuroki
- Mona
- (voice)
Yû Sasahara
- Hibiki Kazairo
- (voice)
Minami Takahashi
- Sara
- (voice)
Kiyono Yasuno
- Kotone's mother
- (voice)