Adaptation of Kami Imai’s manga. The action gag comedy with “bishōjo x violence” is set in 2130, when large swaths of Japan have been quarantined as polluted “Black Spots (BS)” in the aftermath of World War III. However, there are people who have settled behind the massive walls of the Black Spots, where they have developed mysterious powers. The city people on the outside have a label for the Black Spot people they have ostracized: “Needless.” (ANN)