cocoon – One Summer of Girlhood

In 1945, the second and third-year students of a Hiroshima girls' school are taken away to work in war factories. The remaining 220 girls of the first year try to make the best of their new-found status as the only teenagers in an almost deserted town, even amid the deprivations of wartime. On the 7th of August, an American bomber changes their lives forever. Broadcast on the 43rd anniversary of Hiroshima in memory of "the girls who lost their lives to the atom bomb."

A trip to the beach turns out to be more than expected for two people who are mourning the losses of their beloved. Perhaps a mysterious girl known as the "Umi Warabe" can help them to heal their wounds and move on with their lives. Yoshihiro Matsunaga is the chaperone for a group of high-school students on a summer trip to the beach. One night he saves one of the students, Nao Morisawa, as she attempts to drown herself. She had been on this same trip a year ago, with her fiancee, who was later killed in a plane crash. As these two get to know each other, we find that Yoshihiro also has a painful secret from his past. Watching over everything is a mysterious young girl who somehow is always there at decisive moments.

Mari Tamaki is in her second year of high school and wants to start something. It's then that she meets Shirase, a girl with few friends who's considered weirdo by the rest of the class and nicknamed "Antarctic" since it's all she ever talks about. Unlike her peers, Mari is moved by Shirase's dedication and decides that even though it's unlikely that high school girls will ever go to Antarctica, she's going to try to go with Shirase.

A future where the continuity of history has broken off, a world of enormous ruins that continues endlessly. Oceans and continents have vanished, existing only within the archives brought up from the remains. Ura works in the Archive Excavation Department, which restores and analyzes the data left behind. One day, he finds a disturbing visual record...