cocoon - One Summer of Girlhood
cocoon～ある夏の少女たちより～
Synopsis
San and Mayu attend an all-girls school on a warm and tranquil island. When war reaches their shores, they are ordered to help nurse the wounded in a military hospital hidden away in a cave. Amidst escalating death and brutality, the friends struggle to find solace in their fragile lives.
Trailers, Teasers & Extra Featurettes
Official promotional previews, behind-the-scenes footage, and exclusive clips.
Official English TrailerOfficial
Type: Trailer • Published 2026-08-18
Top Cast
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Marika Ito
San (voice)
Hikari Mitsushima
Mayu (voice)
Yoko Hikasa
Tamaki (voice)
Rena Motomura
Hina (voice)
Chinatsu Akasaki
Mari (voice)
Aoi Koga
Yuri (voice)
Yume Miyamoto
Kaede (voice)
Izumi Aoyagi
Shiho (voice)
Miyuki Sawashiro
Kaho (voice)
Umeka Shoji
Sensei (voice)
Maria Abo
(voice)
Akane Amasawa
(voice)
Yui Arai
(voice)
Saaya Okutomo
(voice)
Hayato Kimura
(voice)
Saki Kobari
(voice)
Rei Sonoda
(voice)
Norihito Hase
(voice)
Release History & Theatrical Window
Scotland Loves Anime
Festival / Special Debut
September 4, 2026
Wide Cinema Exhibition
Key Information & Fast Facts
- Director
- Yukimitsu Ina
- Screenplay & Story
- Yukimitsu Ina, Taku Kishimoto
- Original Score
- Kensuke Ushio
- Original Title
- cocoon～ある夏の少女たちより～
- Country of Origin
- Japan
- Spoken Languages
- Japanese
- Runtime
- 1h 0m
- Production Studios
- Sasayuri, NHK Enterprises, NHK
Creative Leadership & Key Crew
Yukimitsu Ina
Yukimitsu Ina, Taku Kishimoto, Machiko Kyo
Kensuke Ushio
Jiro Tazawa
Masahiro Goto
Hitomi Tateno, Kohei Nehyo
Department Leadership Roster
Yukimitsu Ina
Director
Hitomi Tateno
Producer
Kensuke Ushio
Original Music Composer
Yukimitsu Ina
Screenplay
Taku Kishimoto
Screenplay
Jiro Tazawa
Director of Photography
Masahiro Goto
Editor
Kohei Nehyo
Producer
Production Stills & Gallery
Official cinematic photography and background stills for cocoon - One Summer of Girlhood.
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Frequently Asked Questions About cocoon - One Summer of Girlhood
Quick factual answers about cast, synopsis, director, box office, and release information.
What is cocoon - One Summer of Girlhood about?
San and Mayu attend an all-girls school on a warm and tranquil island. When war reaches their shores, they are ordered to help nurse the wounded in a military hospital hidden away in a cave. Amidst escalating death and brutality, the friends struggle to find solace in their fragile lives.
Who directed cocoon - One Summer of Girlhood?
cocoon - One Summer of Girlhood was directed by Yukimitsu Ina.
Who stars in cocoon - One Summer of Girlhood?
The principal cast of cocoon - One Summer of Girlhood includes Marika Ito, Hikari Mitsushima, Yoko Hikasa, Rena Motomura, Chinatsu Akasaki.
When was cocoon - One Summer of Girlhood released and how long is it?
cocoon - One Summer of Girlhood was released in 2026 with a total runtime of 1h 0m.
Who composed the musical score for cocoon - One Summer of Girlhood?
The original motion picture soundtrack for cocoon - One Summer of Girlhood was composed by Kensuke Ushio.
Is cocoon - One Summer of Girlhood based on a book or true story?
cocoon - One Summer of Girlhood is adapted from the following source material: Comic Book: "Machiko Kyo".