The staff for Aniplex and Sony Music‘s new original television anime series SI-VIS: The Sound of Heroes revealed on Sunday the cast for the show’s protagonist Kyōya and the “mysterious girl” from the show’s first episode.
Anan Furuya as Kyōya
Image via SI-VIS: The Sound of Heroes anime’s website
©2025 ハルモニアエンタテインメント
Manaka Iwami as “mysterious girl” Nagi
Image via SI-VIS: The Sound of Heroes anime’s website
©2025 ハルモニアエンタテインメント
The staff also revealed the anime’s clean opening and ending sequence videos.
Image via SI-VIS: The Sound of Heroes’ X/Twitter account
©2025 ハルモニアエンタテインメント
The series debuted on Fuji TV on October 5 at 9:30 a.m. JST, and began streaming on various services in Japan starting on October 7. Crunchyroll is streaming the series worldwide excluding Asia. The anime will air for two consecutive cours (quarter of a year).
The anime also stars:
Nobunaga Shimazaki as Sōji
Akari Kitō as μ (pronounced “myu”)
Daisuke Namikawa as YOSUKE
Ayane Sakura as Siren
Sōma Saitō as JUNE
Daisuke Yoshida (Idol Incidents, Blue Exorcist: Beyond the Snow Saga) is directing the anime at Studio VOLN. Naho Ōtsuki (key animator for Lycoris Recoil, Back Arrow) and Nami Fujii (key animator for My Hero Academia seasons 6 and 7) are designing the characters for animation, and Shūhei Mutsuki (Spy×Family three seasons) is composing the music.
Fumiaki Maruto (Saekano: How to Raise a Boring Girlfriend light novel author and anime scriptwriter) is overseeing and writing the series scripts. Hidari (Santa Company, Fractale, Phantom in the Twilight) is the original character designer.
Other staff members include:
Sub-Character Design: Mika Takahashi, Masahiro Yamanaka
Monster Design: Tomohisa Onoue
Chief Animation Director: Yurie Ōhigashi
Action Animation Director: Takaaki Hirayama
Art Director: Takao Makino
Color Design: Yoshinori Horikawa
Director of Photography: Sota Mikami
CG Director: Masato Takahashi
Editing: Yumi Jinguji
Sound Director: Yasushi Nagura
The in-story unit SI-VIS performs both the opening theme song “So Far Away” and the ending theme song “Friends & Smile” for the anime’s first half. Taisho is handling the vocals in songs for YOSUKE, the leader of SI-VIS.
The story centers on the members of the SI-VIS co-ed vocal unit that is wildly popular both inside and outside Japan. Their true secret identity is a group of heroes who fight against a mysterious calamity threatening to destroy the world named “Mirage.” Through their live performances, they gather the power to fight.
Sources: SI-VIS: The Sound of Heroes anime’s website (link 2), Comic Natalie