真夏のグレイグー

Kurashiki Manatsu, a high school girl and kendo club member, faces an ordinary summer in Tsukuba City until a swarm of self-replicating nanomachines, dubbed “Grey Goo,” unleashes chaos. Alongside her friends Tsumugi, a bug-obsessed streamer, and Ayano, an occult enthusiast, Manatsu flees to a mall, joining forces with classmate Ririka. As they evade bird-like and human-shaped nanomachines, this gripping tale blends sci-fi horror, survival, and the resilience of a group of girls fighting to stay alive in a world consumed by a relentless, microscopic threat. (Unreviewed summary by Grok 2)