Kemono Giga

A boy named Yuu experiences frequent misfortunes, including kidnappings and accidents. On his way to start at a new school, he is kidnapped by lizardmen and taken to underground aqueducts. Terrified and wanting to escape, Yuu is rescued by a cat girl who wields electrical abilities. During their escape, they encounter a deadly enemy called "Makatsuhi," which attacks and kills without hesitation. As the girl fights the creature alone, Yuu attempts to flee but eventually decides to help her. After this event, Yuu's life takes a significant turn.