cocoon - One Summer of Girlhood

Set in Okinawa during the closing stages of the Pacific War, this animated drama follows San and Mayu, students at a girls' school. When the conflict reaches their island, they and their classmates are recruited as nurses to treat wounded soldiers in a hidden cave hospital. As the violence intensifies and the girls are eventually ordered to sacrifice their lives for their country, they attempt to escape and survive a tropical landscape that has been transformed into a battlefield.

The film was directed by Yukimitsu Ina, who also co-wrote the screenplay with Taku Kishimoto. Produced by NHK, NHK Enterprises, and Sasayuri, the production features a voice cast including Marika Ito as San and Hikari Mitsushima as Mayu, with other roles voiced by Yoko Hikasa, Rena Motomura, Chinatsu Akasaki, and Aoi Koga. A total of 24 cast members are credited in this hour-long TV movie. Since its release on September 4, 2026, the film has received a rating of 8/10 on TMDB based on one vote.