Boogiepop Doesn't Laugh

Everything started on the day when Kirima Nagi, who had been diagnosed with an unknown, incurable disease, made a sudden recovery and Makiko found remnants of some kind of medicine in her room. Kisugi Makiko began various experiments with this medicine and gained extraordinary powers. Soon after, there is news of a number of girls dying mysterious deaths. The number of victims climbs to 5 and the suspect still hasn't been caught...