🎶SI-VIS: The Sound of Heroes (2025) – Cast, Plot, Release Date & Where to Watch the Musical Anime Adventure on Crunchyroll

Prepare your headphones and open your hearts, because SI-VIS: The Sound of Heroes is making its grand debut this October, streaming exclusively on Crunchyroll! Get ready to dive into a world where music isn’t just entertainment—it’s power, identity, and the key to saving a fractured society.

📜 What Is SI-VIS: The Sound of Heroes?

SI-VIS: The Sound of Heroes is a brand-new original Japanese anime series produced by Aniplex and Sony Music Entertainment Japan, with a story written by Fumiaki Maruto and original character designs by Hidari. Set in a unique world where sound and music hold extraordinary significance, the series explores the life of high schooler Akiteru Oboshi, a boy disillusioned with typical teenage experiences like fun, friendships, and romance.

But everything changes when Iroha Kohinata, the teasing and ever-present sister of his best friend, gets involved in his life. As tensions rise, mysterious events unravel, and the line between ordinary and extraordinary begins to blur. Will Akiteru awaken the hero inside him through the power of music?

🎧 The Epic Plot

In a world where sound shapes reality, Akiteru initially finds life dull and pointless. Iroha’s constant presence, teasing, and interference only seem to irritate him… until an unexpected chain of events thrusts them into the epicenter of a musical revolution.

Together with a cast of unique characters—including Yosuke, Siren, μ, Sōji, and June—they face trials that will challenge their sense of self, friendship, and purpose. As battles of melody and rhythm intensify, Akiteru must decide whether to embrace his destiny as a hero or continue to run from it.

🎤 Meet the Key Characters

✅ Akiteru Oboshi – A disenchanted high schooler, resistant to the typical “fun” of youth, but destined to change when faced with challenges beyond comprehension.

✅ Iroha Kohinata – His best friend’s teasing, determined sister whose meddling brings unexpected consequences, sparking the journey that will reshape their lives.

✅ Yosuke (Daisuke Namikawa) – An enigmatic figure who holds crucial knowledge about the power of sound.

✅ Siren (Ayane Sakura) – A mysterious character whose own agenda intertwines with the fate of the heroes.

✅ μ (Akari Kitō), Sōji (Nobunaga Shimazaki), June (Soma Saito) – A diverse ensemble of allies and rivals, each possessing unique connections to the world of music and power.

🎶 A Symphony of Production Excellence

Directed by Daisuke Yoshida, with a mesmerizing original soundtrack by Shuhei Mutsuki, and animated by Studio VOLN, SI-VIS promises to deliver stunning visuals, pulse-pounding action, and an unforgettable musical journey. The atmospheric world blends high school drama with the fantastical elements of a music-powered society, creating a tone that is both relatable and wildly imaginative.

📆 Release Date & Where to Watch

📅 Premiere Date: October 5, 2025

📺 Streaming On: Crunchyroll

🎞️ Genre: Music / Action / Drama / Supernatural

🌟 Why You Can’t Miss SI-VIS: The Sound of Heroes

If you love stories where music transcends entertainment and becomes a battleground, SI-VIS: The Sound of Heroes is your next anime obsession. With unforgettable characters, epic battles of rhythm versus reality, and a plot that dives deep into identity and rebellion, it promises to be a thrilling ride.

⚡ Mark your calendars and get ready to turn up the volume—this October, heroes won’t just fight with swords or magic, but with sound itself. Only on Crunchyroll.