The official Twitter/X account of the ongoing original TV anime series SI-VIS: The Sound of Heroes have announced the addition of two new cast members. The anime premiered in Japan on October 5, 2025 and will air for two consecutive cours.
The two new cast members include Anan Furuya as Kyoya and Manaka Iwami as Nagi.
They join the anime’s previously announced voice cast that stars:
- • Daisuke Namikawa as YOSUKE
- • Ayane Sakura as Seiren
- • Nobunaga Shimazaki as Soji
- • Akari Kito as μ
- • Soma Saito as JUNE
Additionally, creditless versions of the anime’s opening and ending sequences were also released.
Daisuke Yoshida (Blue Exorcist: The Blue Night Saga) is directing the anime series, with Fumiaki Maruto (Saekano author) as series screenwriter and scriptwriter, Naho Otsuki and Nami Fujii as character designers, and Hidari as original character designer. Studio VOLN is handling the animation production.
SI-VIS: The Sound of Heroes was officially revealed in July 2025 and is produced by Aniplex and Sony Music. Aniplex is fully owned by Sony Music Entertainment.
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Crunchyroll is streaming SI-VIS: The Sound of Heroes worldwide, and describes the main synopsis as:
SI-VIS is a co-ed music group, led by YOSUKE, shaking up the global music scene with their unmatched vocals and performances. However, they are actually heroes in disguise, battling against mysterious forces threatening the world. They convert audience energy at live performances into combat power. Luckily, the battles appear to be ordinary concerts to the public, keeping their identity a secret.
Sources: SI-VIS: The Sounds of Heroes Official Twitter (2), Anime News Network, Comic Natalie
