cocoon - One Summer of Girlhood

cocoon - One Summer of Girlhood (2026)



cocoon～ある夏の少女たちより～

8.0 2026 60 min —

Director: Yukimitsu Ina

Cast: Marika Ito, Hikari Mitsushima, Yoko Hikasa, Rena Motomura, Chinatsu Akasaki

Animation Drama TV Movie War
On a sun-drenched island, where a peaceful all-girls academy hums with quiet routine, best friends San and Mayu find their sheltered world shattered when conflict crashes onto the coastline. Forced into service at a covert military hospital carved into a cliffside cave, the two girls trade textbooks for bandages, confronting a relentless tide of casualties and cruelty. As the horrors of war escalate around them, they cling to each other and the fleeting, tender moments of hope that keep their fragile existence from crumbling entirely.

More About This Film

cocoon - One Summer of Girlhood follows San and Mayu, two girls attending an all-girls school on a peaceful island before war reaches their home. They are eventually ordered to help nurse wounded soldiers in a makeshift military hospital hidden inside a cave.

Based on Machiko Kyo's acclaimed manga, the film contrasts the innocence of adolescence with the brutality of war. The animation places friendship and girlhood at the center of a story about survival, loss, and the fragile moments of comfort people find during conflict.

  • Directed by Yukimitsu Ina in his feature directorial debut.
  • The film is produced by SASAYURI, an animation studio founded by former Studio Ghibli animator Hitomi Tateno.
  • Veteran animators Akihiko Yamashita and Shinji Otsuka contributed to the production.
  • Kensuke Ushio composed the score.
  • GKIDS released the film theatrically in the United States beginning September 4, 2026.

Where to Watch

cocoon - One Summer of Girlhood received a theatrical release before home distribution, with digital availability depending on territory.