In Greek mythology, there is a goddess of memory named Menemosine, who had nine daughters with Zeus and nine muses , they represent the inspiration and art of music, epic, history, lyric, tragedy, hymn, dance, comedy and astronomy. The story takes Shinjuku, Tokyo as the background, and revolves around a mysterious girl Aso Takashi, interspersed with suspense, fighting, love and so on. Aso, a young girl who works as a consultant in Shinjuku, has a secret that cannot be humane to the outside world. She has doubts about the recent murder case in Shinjuku because the circumstances of the case are too out of the ordinary. Secondly, there are the serial killings of important people and the terrorist incidents using biological weapons, all of which make Aso feel unusual. She felt that there must be some kind of connection between these seemingly unrelated events. Aso and his assistant Mimi set out to investigate these questions. However, soon Aso and Mimi were assassinated by the assassin hunter Lola. Gradually, a man who looks like a boy whose actual age is unknown, the director of Qingshan Pharmaceutical Research Institute and others have surfaced one after another..