Iris Out

This article is about the Kenshi Yonezu song. For the silent film technique, see Iris shot.

"Iris Out" is a song recorded by Japanese singer-songwriter Kenshi Yonezu. Released digitally on September 15, 2025, via SME Records, "Iris Out" served as the opening theme song for the Japanese animated film Chainsaw Man – The Movie: Reze Arc. The song was later released physically on September 24, 2025, alongside "Jane Doe", the closing theme song, as a double A-side maxi single.

"Iris Out"
Single by Kenshi Yonezu
A-side	"Jane Doe"
Released	September 24, 2025 (2025-09-24)
Length	2:32
Label	SME
Songwriter	Kenshi Yonezu
Producer	Kenshi Yonezu
Kenshi Yonezu singles chronology
"Plazma" / "Bow and Arrow" (2025) "Iris Out" / "Jane Doe" (2025) "1991" (2025)
Music video
"Iris Out" on YouTube

Background

Kenshi Yonezu's single "Kick Back", used as the opening theme song for the anime adaptation of Chainsaw Man, saw global commercial success upon its release. Becoming the first song recorded in Japanese to receive a Gold certification from the Recording Industry Association of America (RIAA),^[1] "Kick Back" charted in various territories, including the Billboard Hot Rock & Alternative Songs chart, the UK Rock & Metal chart and the Canadian Hot 100.

In a press release on July 4, 2025, Kenshi Yonezu announced he recorded "Iris Out", the opening theme song for the Japanese animated film Chainsaw Man – The Movie: Reze Arc.^[2] On August 1, the release date of "Iris Out" was announced for September 24, as a double A-side single with an untitled song.^[3] The title for the untitled song was revealed on August 14, "Jane Doe", a collaboration single with Japanese-American singer Hikaru Utada.^[4] In a press release, "Jane Doe" was revealed as the ending theme song for the film.^[5]

Release

"Iris Out" was digitally released on September 15, 2025. The song was later released physically on September 24, 2025, alongside "Jane Doe", as a double A-side single. Three variants were released: the regular edition, the Iris Out edition and the Jane Doe edition. The Iris Out variant includes an acrylic stand and a Polaroid photo of the character Reze from Chainsaw Man as bonus goods, while the Jane Doe version consists of a DVD of the "Kick Back" music video and a live performance video.^[6] First press bonuses for all variants include a serial number for a lottery in winning tickets to Yonezu's 2026 Ghost Tour.

Music video

A music video was released on September 15, 2025, on Yonezu's official YouTube channel, using footage from the film. Billboard Japan reported that it contains some spoilers from the movie.^[7]

Track listing

• Digital download and streaming

1. "Iris Out" – 2:32

• CD

1. "Iris Out" – 2:31
2. "Jane Doe" – 3:55

• Jane Doe DVD

1. "Chainsaw Man – The Movie: Reze Arc" (trailer) – 1:29
2. "Kick Back" (music video) – 3:39
3. "Kick Back" (live video) – 3:13

Personnel

• Kenshi Yonezu – vocals, production, programming, arrangement
• Masahito Komori – mixing, engineering
• Randy Merrill – mastering

Charts

Weekly charts Weekly chart performance for "Iris Out" Chart (2025) Peak position Global 200 (Billboard)[8] 5 Hong Kong (Billboard)[9] 5 Japan (Japan Hot 100)[10] 1 Japan Hot Animation (Billboard Japan)[11] 1 Japan (Oricon)[12] with "Jane Doe" 2 Japan Combined Singles (Oricon)[13] with "Jane Doe" 1 Japan Anime Singles (Oricon)[14] with "Jane Doe" 1 South Korea (Circle)[15] 17 Singapore Regional (RIAS)[16] 27 Taiwan (Billboard)[17] 2 US World Digital Song Sales (Billboard)[18] 6

Monthly charts Monthly chart performance for "Iris Out" Chart (2025) Peak position Japan (Oricon)[19] with "Jane Doe" 5 Japan Anime Singles (Oricon)[20] with "Jane Doe" 1 South Korea (Circle)[21] 133

Certifications

Certifications for "Iris Out"

Region	Certification	Certified units/sales
Japan (RIAJ)[22] with "Jane Doe"	Platinum	250,000^
^ Shipments figures based on certification alone.

Release history

Release history and formats for "Iris Out"

Region	Date	Format	Version	Label	Ref.
Various	September 15, 2025	Digital download streaming	Digital	SME	[23]
Japan	September 24, 2025	CD	Standard		[24]
			Iris Out		[25]
		CD DVD	Jane Doe		[26]