SI-VIS: The Sound of Heroes, the original TV anime co-produced by Aniplex and Sony Music, is now available to stream on multiple platforms in Japan. The series follows a music unit of hero-artists who battle mysterious disasters using the energy gathered from their live concert audiences.

Where to Stream SI-VIS: The Sound of Heroes

The series is available for unlimited streaming (見放題) on the following services:

• DMM TV — ¥550/month; 14-day free trial; 550 points on first sign-up
• U-NEXT — ¥2,189/month; 31-day free trial; ¥500 in points on sign-up
• Amazon Prime Video — ¥600/month (Amazon Prime membership); 30-day free trial
• dAnime Store — ¥660/month; first month free
• Netflix — from ¥890/month (Ad-Supported Standard); no free trial
• FOD — available to existing FOD Premium subscribers

The series is not available on Lemino, Hulu, Disney+, TVer, or TSUTAYA DISCAS.

Best Value: DMM TV

Among all available platforms, DMM TV offers the lowest monthly price at ¥550, with all 24 episodes included in the unlimited plan. New subscribers get a 14-day free trial and 550 bonus points redeemable for rental titles. For viewers who also want access to new-release films or manga, U-NEXT‘s 31-day trial and broader content library make it a strong alternative.

Story Synopsis

Kyouya, a boy from Aomori, idolizes YOSUKE — leader of the hugely popular music unit “SI-VIS” and also his relative. Kyouya heads to Tokyo to audition for a new member slot in the group. In Shibuya, he crosses paths with a mysterious girl named Nagi and witnesses a SI-VIS promotional event — only to be caught up in a strange catastrophe known as a “Mirage.” He soon discovers the truth: SI-VIS are not just musicians, but artist-heroes who channel the energy of their live audiences to fight disasters that threaten to erase the world — all while their fans cheer them on, completely unaware.

Key Creative Staff

• Director: Yoshida Daisuke
• Series Composition & Screenplay: Maruto Fumiaki (Saekano: How to Raise a Boring Girlfriend)
• Original Character Design: Hidari (Kouya no Kotobuki Hikoutai)
• Anime Character Design: Otsuki Naho, Fujii Nami
• Music: Mutsuki Shuhei
• Animation Studio: Studio Voln
• Broadcast: Fuji TV and others, from October 5, 2025, every Sunday at 9:30 a.m.
• Episodes: 24 (two consecutive cours)

Theme songs are performed by the in-universe unit “SI-VIS,” composed of Sony Music vocalists. Cour 1 OP: “So Far Away”; Cour 2 OP: “Supernova”; Cour 1 ED: “FRIENDS & SMILE”; Cour 2 ED: “Singing Over”.

Main Cast

• Kyouya — Furuya Anan (Overtake!)
• Nagi — Iwami Manaka (Maquia: When the Promised Flower Blooms)
• Seirene — Sakura Ayane (My Hero Academia — Uraraka Ochaco)
• μ (Myu) — Kito Akari (Demon Slayer — Kamado Nezuko)
• Souji — Shimazaki Nobunaga (Jujutsu Kaisen — Mahito)
• JUNE — Saito Soma (Haikyuu!! — Yamaguchi Tadashi)
• YOSUKE — Namikawa Daisuke (Lupin III — Goemon Ishikawa)
• Mitsueda Sena — Takagaki Ayahi (Symphogear — Yukine Chris)
• Krios — Han Megumi (Hunter x Hunter — Gon Freecss)
• Rykos — Uchida Maaya (Chuunibyou demo Koi ga Shitai! — Takanashi Rikka)
• Medeia — Kitamura Eri (Puella Magi Madoka Magica — Miki Sayaka)

Additional cast includes Kawase Maki as Kamisato Rui, Toriumi Kousuke as Apollon, Kasama Jun as Samael, and Kawamoto Kunihiro as Arkon.

Frequently Asked Questions

Is SI-VIS: The Sound of Heroes on Netflix?

Yes. Netflix streams the series under its Ad-Supported Standard plan from ¥890/month. There is no free trial period for Netflix.

Can I watch it on Amazon Prime Video?

Yes. Amazon Prime members can watch all episodes at no extra charge. New members get a 30-day free trial.

How many episodes are there?

The series runs for 24 episodes across two consecutive cours, which began airing on October 5, 2025.

Who sings the theme songs?

All theme songs and in-show musical performances are by the unit “SI-VIS.” Lyric videos for in-show songs such as “MELODEA” (Episode 1) and “Gensoukyoku wo Kimi ni” (Episode 3) have been released on the official Aniplex YouTube channel.