GKIDS has officially announced that it will release the cocoon – One Summer of Girlhood anime on Blu-ray on January 19, 2027, in partnership with Shout! Studios. Pre-orders for the physical home video release are currently live via the official GKIDS online store and Amazon, alongside digital storefronts including Apple TV and Prime Video.
Collectors picking up the Blu-ray will find a robust suite of special features, including official teaser videos, theatrical trailers, and an exclusive excerpt from the NHK documentary kensuke ushio: Letting the Music Just Be There. The physical drop follows GKIDS' theatrical rollout, which brought the film to North American cinemas in September 2026 following its festival run at JAPAN CUTS.
Behind the Animation
Directed and co-written by Yukimitsu Ina at studio Sasayuri, the adaptation brings Machiko Kyo’s poignant manga to life. Acclaimed composer Kensuke Ushio crafted the film's evocative musical score, while Taku Kishimoto collaborated on the screenplay. The voice cast features stellar performances from Hikari Mitsushima, Marika Ito, Yoko Hikasa, and Aoi Koga.
A Tale of Youth and Conflict
Based on Machiko Kyo’s award-winning manga—which recently secured Best One-Shot Manga at the American Manga Awards and received an English publication license from VIZ Media—the narrative explores the harrowing realities of wartime adolescence.
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.
GKIDS Synopsis


