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cocoon

GKIDS released cocoon - One Summer of Girlhood digitally on Apple TV and Prime Video, with a Blu-ray Disc release set for January 19. The film had opened in North American theaters on September 4 following festival screenings and a JAPAN CUTS premiere.

Synthesized from 10 Yomimono stories · updated 1d ago

cocoon - One Summer of Girlhood is the anime adaptation of Machiko Kyo's manga about two schoolgirls on a tropical island during World War II. The 63-minute film is the debut feature of director Yukimitsu Ina and of the studio Sasayuri, with Kensuke Ushio composing the music and Hitomi Tateno, a former Studio Ghibli animator, as animation producer. The story follows San and Mayu as their school is ordered to nurse the wounded in a cave hospital and they lose friends one by one. The anime debuted on BS-NHK in March 2025 and later aired on NHK General that August.

GKIDS acquired all North American rights in June and set a September 4 theatrical opening in Japanese with English subtitles and with an English dub. The film had its North American premiere at JAPAN CUTS in July and its Canadian premiere at the Fantasia International Film Festival, which ran July 16 to August 2 in Montreal. GKIDS streamed an English-subtitled trailer in July and an English-dubbed trailer in August.

The release was nearly disrupted when GKIDS apologized for incorrectly timed English subtitles at screenings of The Last Blossom, pulling affected shows from sale and issuing refunds. GKIDS confirmed cocoon would still open September 4 as planned. A review published September 2 called the film a restrained war drama, closer to Grave of the Fireflies than to Kiki's Delivery Service, praising its oil-painting backgrounds and the silkworm metaphor at its center.

On October 27, GKIDS released the film digitally on Apple TV and Prime Video and set a Blu-ray Disc release for January 19. The home rollout extends a film that had a limited theatrical window and festival screenings.

Key facts

Digital release
Released on Apple TV and Prime Video on October 27 ↗
Blu-ray release date
January 19 ↗
North American theatrical release
September 4, in Japanese with English subtitles and with an English dub ↗
Director
Yukimitsu Ina, in his directorial debut ↗
Studio
Sasayuri ↗
Music
Composed by Kensuke Ushio ↗
Animation producer
Hitomi Tateno, a former Studio Ghibli animator ↗
Runtime
63 minutes ↗
Japanese broadcast
Debuted on BS-NHK in March 2025 and aired on NHK General that August ↗
Festival screenings
Canadian premiere at the Fantasia International Film Festival, which ran July 16 to August 2 in Montreal ↗

Timeline

Written with AI from the cited Yomimono stories below, each itself sourced. See our editorial policy. Every fact links the story it came from.

Facts

Release
movie · 2026-10-27 · digital · 2026-10-27
Release
movie · September 4 · North American theaters · 2026-10-27
Release
movie · September 4 · North America · 2026-07-16
Release
manga · 2026-06-16 · 2026-06-16
Release
movie · January 19 · Blu-ray Disc · 2026-10-27
1 more release
Release
movie · 2025 · Japan · 2026-07-16
Licensed by
GKIDS (North America) · 2026-08-18

Structured graph also available as JSON at /public/entities/cocoon. CC BY 4.0.

Claim activity

When a claim about cocoon was confirmed, debunked, or disputed against open-web sources. The record stays even after a claim drops off the facts list.

  • Confirmed movie September 4 North American theaters 4d ago · source
  • Confirmed movie 2026-09-04 Oct 18 · source
  • Debunked movie 2026-09-04 Sep 17 · source
  • Confirmed movie September 4 North America Sep 12 · source
  • Confirmed movie 2025 Japan Sep 12 · source

All coverage

4d ago

GKIDS Releases cocoon Digitally, Sets Blu-ray for January 19

GKIDS released cocoon - One Summer of Girlhood, the anime of Machiko Kyo's Cocoon manga, digitally on Apple TV and Prime Video on Tuesday. A Blu-ray Disc release ships January 19. GKIDS screened the film in North American theaters on September 4 in Japanese with English subtitles and with an English dub. Yukimitsu Ina directed, kensuke ushio composed the music, and Sasayuri produced.

Sep 3

GKIDS Apologizes for The Last Blossom Subtitle Glitch

GKIDS issued a statement Thursday apologizing for incorrectly timed English subtitles during screenings of The Last Blossom last Sunday, which led to cancellations on Monday. The company pulled affected shows from sale, issued refunds, and delivered a corrected version Monday, though some theaters could not update in time. GKIDS is reviewing options including makeup screenings. It also confirmed cocoon will open September 4 as planned.

Aug 18

GKIDS Streams English-Dubbed Trailer for cocoon Wartime Anime

GKIDS began streaming an English-dubbed trailer for the cocoon anime on Tuesday. The film, based on Machiko Kyo's manga, opens in North American theaters on September 4 with both Japanese subtitled and English dubbed screenings. GKIDS will also release the anime on home video. The story follows two girls at an all-girls school as war reaches their tropical island.

Jul 16

GKIDS Drops 'Cocoon - One Summer of Girlhood' Trailer, Sets September Release

GKIDS has released the English-subtitled trailer for 'Cocoon - One Summer of Girlhood', the debut feature from director Yukimitsu Ina. Based on Machiko Kyo's manga, the film follows two students whose island life is disrupted by WWII. It opens in North American theaters on September 4 in Japanese with subtitles and an English dub. The film features a notable staff including former Ghibli animators and composer Kensuke Ushio.

Jul 16

GKIDS to Release Cocoon Wartime Anime in North American Theaters on September 4

GKIDS began streaming an English-subtitled trailer for the anime adaptation of Machiko Kyō's Cocoon manga. The film will open in North American theaters on September 4 in Japanese with subtitles and with an English dub, with a home video release to follow. The anime, which aired in Japan in 2025, is set on a tropical island during war and follows two schoolgirls. The cast includes Hikari Mitsushima and Marika Itō, with direction by Yukimitsu Ina and music by kensuke ushio.

Jul 10

Fantasia Int'l Film Fest Screens Grotesqqque, A New Dawn, cocoon Anime

The 30th Fantasia International Film Festival will screen multiple anime premieres including the world premiere of CloverWorks' three-part collection Grotesqqque, two episodes of the live-action Junji Ito series, and several short films, along with the North American premiere of A New Dawn and the Canadian premiere of cocoon. The festival runs July 16 to August 2 in Montreal.

Jun 16

Billy Bat and Cocoon Lead This Week's Reader's Corner

Beneath the Tangles' June 16th Reader's Corner features reviews of several new manga releases, headlined by the long-awaited English release of Naoki Urasawa's Billy Bat and the one-volume historical manga cocoon about the Himeyuri schoolgirls during the Battle of Okinawa.