San en Mayu zijn twee schoolmeisjes die in Okinawa wonen tijdens de laatste maanden van de oorlog in de Stille Oceaan. Samen met hun klasgenoten worden de twee vrienden opgeroepen voor de oorlogsinspanning als verpleegsters voor gewonde soldaten. Wanneer ze het bevel krijgen om te sterven voor hun land, ontsnappen de overgebleven leden van de groep alleen om de barre omgeving van een tropisch paradijs onder ogen te zien dat een hels slagveld is geworden.
Nee, helaas is cocoon～ある夏の少女たちより～ nog niet beschikbaar op Netflix in Nederland.
| Directing | 伊奈透光 | Director |
| Production | 舘野仁美 | Producer |
| Sound | 牛尾憲輔 | Original Music Composer |
| Sound | 伊藤万理華 | Theme Song Performance |
| Sound | 川田清貴 | Sound Effects |
| Writing | 今日マチ子 | Comic Book |
| Visual Effects | 舘野仁美 | Animation Director |
| Visual Effects | めばち | Character Designer |
| Art | 尾崎智美 | Prop Designer |
| Visual Effects | 尾崎智美 | Character Designer |
| Writing | 伊奈透光 | Screenplay |
| Writing | 岸本卓 | Screenplay |
| Art | 渡邊洋一 | Art Direction |
| Visual Effects | 水田信子 | Color Designer |
| Camera | 田沢二郎 | Director of Photography |
| Editing | 後藤正浩 | Editor |
| Art | 伊奈透光 | Storyboard Artist |
| Visual Effects | 伊奈透光 | Animation Director |
| Production | 坂田淳 | Production Supervisor |
| Production | 八木雪子 | Production Supervisor |
| Production | 吉府和大 | Line Producer |
| Visual Effects | 井津宏典 | Key Animation |
| Art | 廣江桃子 | Background Designer |
| Art | 太田清美 | Background Designer |
| Art | 梅沢沙也香 | Background Designer |
| Art | 須藤唯 | Background Designer |
| Art | 山田卓人 | Background Designer |
| Art | 井上彩 | Background Designer |
| Art | 上野未紗子 | Background Designer |
| Art | 坂口樹果 | Background Designer |
| Art | 藤原準紘 | Background Designer |
| Art | 米山嶺 | Background Designer |
| Art | 片岡茜 | Background Designer |
| Art | 伊奈淳子 | Background Designer |
| Art | 縫部文江 | Background Designer |
| Art | 渡邊美里 | Background Designer |
| Art | 武重洋二 | Background Designer |
| Art | 石田めぐみ | Art Department Manager |
| Production | 吉府和大 | Production Assistant |
| Sound | 清水幸司 | Sound Recordist |
| Visual Effects | タン・シャオフイ | Compositing Artist |
