Mankai Movie A3! ~Spring & Summer~ is set to premiere in December 2021. Mankai Movie A3! ~Autumn & Winter~ will premiere in 2022.
The cast for Mankai Movie A3! ~Spring & Summer~ includes Ryugi Yokota, Ryōya Takahashi, Yūki Maekawa, Toshiki Tateishi, Yamato Furuya, Shō Jinnai, Yū Miyazaki, Jun Noguchi, Reo Honda, Tomoru Akazawa, Ryo Taguchi, Kōsuke Kujirai, Ray Fujita, Tomohiro Tauchi, Ryo Kitazono, Ryūjirō Izaki, and Ryunosuke Kawai.
The cast for Mankai Movie A3! ~Autumn & Winter~ includes all those from the first movie, but adding Kenta Mizue, Tarō Nakamura, Ryotaro Akazawa, Seiya Inagaki, Yoshihiko Aramaki, Keisuke Ueda, Ryosei Tanaka, and Kandai Ueda.
Kenji Kurata is directing both films, and also writing the script for the first film. He is co-writing the script for the second film with Hideyuki Kobashi. Fumiya Matsuzaki and Shinjirō Kameda, the director and scriptwriter of the original stage plays, are credited for stage and script supervision. Yu (vague), the composer for the stage plays' music, is returning for the films.
Funimation streams the anime and describes the story as:
Mankai Company is a far cry from its glory days as an all-male theater. With only one member left and debt collectors at the door, it’s no wonder Izumi Tachibana finds herself in over her head when she boldly confronts the Yakuza’s loan sharks, promising to bring her father’s theater back into the spotlight. She might be able to recruit enough talent, but can they bloom into the actors she needs?