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A New Anthem for Chainsaw Man

Just days before the Japan premiere of Chainsaw Man – The Movie: Reze Arc, Kenshi Yonezu has unveiled the official music video for “IRIS OUT.” The track is one of two theme songs written and performed by the acclaimed singer-songwriter for the highly anticipated anime film.

Sound That Mirrors the Chaos

Clocking in at just over two and a half minutes, “IRIS OUT” blends a ragtime-inspired rhythm with techno accents, layered vocals, and playful yet frenzied piano riffs. The result is a soundscape that feels chaotic, kinetic, and dangerously electrified—mirroring the cinematic impact of Reze, the film’s pivotal new character.

Symbolism in the Title

The song’s name references the classic “iris-out” film effect, where the screen narrows into a darkened circle before fading to black—an apt metaphor for the intensity of Denji’s obsession and the dangerous allure of Reze.

What’s Next

“Iris Out” is now streaming worldwide on Spotify and Apple Music. Its B-side, a collaboration with pop icon Hikaru Utada, will release on September 24 via SME Records. Chainsaw Man – The Movie: Reze Arc premieres in Japan on September 19, followed by a U.S. theatrical release on October 24, 2025.