The official accounts for the original television anime series, SI-VIS: The Sound of Heroes, have announced the addition of Anan Furuya and Manaka Iwami to its cast. Furuya will voice the protagonist, Kyōya, while Iwami will portray the “mysterious girl,” Nagi. This announcement adds further depth to the ensemble of voice talent for the series, which premiered on October 5, 2025.
Expanding the Heroic Ensemble
Anan Furuya steps into the leading role of Kyōya, the protagonist of SI-VIS: The Sound of Heroes. Joining him is Manaka Iwami, cast as Nagi, a character described as a “mysterious girl” first introduced in the anime’s initial episode. Their roles are crucial to the unfolding narrative of the series.
A Story of Music, Heroes, and Mystery
SI-VIS: The Sound of Heroes is an original anime television series produced by Aniplex and Sony Music Entertainment Japan, with animation handled by Studio VOLN. The series centers on a co-ed music group named SI-VIS, renowned globally for their exceptional vocals and performances. However, their public persona as artists conceals a secret identity: they are heroes who secretly battle enigmatic forces threatening the world. The unique premise sees them converting the energy generated from their live audiences into combat power, all while ensuring their heroic endeavors appear as ordinary concerts to maintain their secrecy.
The anime began airing on October 5, 2025, on Fuji TV and other networks, and is slated for a two-consecutive-cour run. Crunchyroll is streaming the series, making it available to a global audience.
Key Creative Team Behind the Production
The production of SI-VIS: The Sound of Heroes boasts a notable creative team. Daisuke Yoshida is directing the anime, with Fumiaki Maruto, known for Saekano: How to Raise a Boring Girlfriend, handling the series composition and script. Original character designs are provided by Hidari, who has worked on titles like Fire Emblem Echoes: Shadows of Valentia, with Nami Fujii and Naho Otsuki adapting them for animation. Shuhei Mutsuki is composing the music for the series.
Previously Announced Cast Members
Furuya and Iwami join an already established cast of prominent voice actors:
- Daisuke Namikawa as YOSUKE
- Ayane Sakura as Seiren
- Nobunaga Shimazaki as Soji
- Akari Kito as μ (Myū)
- Soma Saito as JUNE
The reveal of Anan Furuya and Manaka Iwami further builds anticipation for SI-VIS: The Sound of Heroes as it continues its broadcast run, adding fresh talent to its intriguing narrative of music and heroism.
