Kyofu Gakuen: Shinigami Shojo [恐怖学園　死神少女]

On their way to a club practice during summer vacation, four members of the Rhythmic Gymnastics Club, Kasumi, Hotaru, Mayu, and Akane, find a dead crow at the school gate. Kasumi tries not to worry about it, but during practice, she sees an eerie sight.... And what is the terror that strikes Kachumi?