Also part of the show's cast are:
- Keita Machida (Yu Yu Hakusho) as Sho Takaoka, a diligent guitarist
- Jun Shison (Ressha Sentai ToQGer, Fermat's Cuisine) as Kazushi Sakamoto, an introspective pianist and music geek
- Masaki Suda (Kamen Rider W, Don't Call It Mystery) as Toya Shinzaki, the charismatic vocalist of a rival band
The series will be primarily written by Mari Okada (Anohana: The Flower We Saw That Day) alongside with a group of talented female writers, namely: Tomoko Akutsu, Shiho Kosaka, and Anna Kawahara. Directed by Kensaku Kakimoto (Parasite in Love) and Kotaro Goto (The Naked Director), the series is set for a 2025 release only on Netflix worldwide.