The official website for the Tamon’s B-Side anime announced the anime’s January 1, 2026 streaming debut at 24:00 JST, or January 2 at 12:00 a.m. JST, on U-NEXT and Anime Hōdai in Japan. Tamon’s B-Side will make its TV broadcast debut on January 3 at 25:00 JST, or January 4 at 1:00 a.m. JST, on Tokyo MX and BS11.
Previously announced cast members include:
- Saori Hayami as Utage Kinoshita
- Kakeru Hatano as Tamon Fukuhara
- Shōya Chiba as О̄ri Sakaguchi
- Tasuku Hatanaka as Keito Tachibana
- Kōhei Amasaki as Natsuki Ishibashi
- Ryuuho Nagaoka as Rintarо̄ Kai
- Masaaki Mizunaka as Wataru Fujita
- Takako Honda as Izumi Shiraishi
- Saya Fukuzumi as Yuina
- Yurika Hirayama as Riko
- Runa Sasaki as Homare Kinoshita
- Ayaka Nanase as Yamato Kinoshita
The in-story idol group F/ace performs the insert song “Supernova.”
The staff includes:
- Chief Animation Directors: Mitsuru Chiba, Airi Tsuyuki
- Prop Designer: Moe Fujii
- Music: Takashi Ōmama, Natsumi Tabuchi
- Art Director: Li Yu
- CG Director: Ayaka Momma
- 2D Design: Makoto Yoshigaki
- Compositing Director of Photography: Soyaka Aoyagi
- Color Key Artist: Miho Kimura
- Editing: Michi Takigawa
- Sound Director: Fumihiko Ōtera
- Sound Effects: Sachiko Nishi
- Sound Production: Rie Tanaka
Chika Nagaoka directs the Tamon’s B-Side anime at J.C. Staff, and Chiaki Nagai writes and oversees the series’ scripts. Further, Yōko Itō is the character designer and chief animation director, and Shochiku, King Records, and Hakusensha produce the anime.
The original manga by Yuki Shiwasu, which debuted in 2021, is available in English on VIZ Media. Lastly, here’s an overview, via VIZ Media:
Tamon is an insecure mess in real life, and what’s worse, he’s threatening to quit! Utage refuses to let anyone stand in Tamon’s way—least of all himself. What’s a fangirl to do but roll up her sleeves and support her favorite singer with everything she’s got?
