この街の下で - 『東京魔人學園剣風帖短編集 3』
63Description
Kono Sora no Shita de seems to be a standalone chapter within a series of manga adaptations of a PlayStation game called Tokyo Majin Gakuen Sotonori-chou. It involves a group of high school students learned in the field of martial arts defending themselves and their town against their zombi-fied classmates and other grisly monsters.