In the early 1990s, experiments were carried out secretly in Japan. Two different methods were used in the experiments. One method involved forcing stress upon expecting parents and when the baby was born, provoke the baby into mutations and develop their special abilities. The other method involved birth to babies having abilities of animals and insects. The special abilities were derived from gene manipulation. Subaru, Saya and others were born from those experiments.

After the Great Kanto earthquake in 1923, a troupe of female sumo wrestlers arrive in Tokyo.

1989 is the 64 Shouwa year in the Japanese calendar, thus the unsolved girl kidnapping-murder case is called “64(rokuyon)” that got up in this year in Criminal Investigation Department in the Prefectural Police Department. And 14 years were over as the prefecture’s police to be unsolved greatest stain, and statute of limitations approached it. In 2002, Yoshinobu Mikami, an ex-detective who was assigned as the investigator of the “Rokuyon” case 14years ago, moves as a Public Relations Officer in the Police Affairs Department against his will. As a newly assigned Public Relations Officer, he was troubled with the relation between the reporters, new case has occurred. And that new case traced “Rokuyon” case exactly.

1989 is the 64 Shouwa year in the Japanese calendar, thus the unsolved girl kidnapping-murder case is called “64(rokuyon)” that got up in this year in Criminal Investigation Department in the Prefectural Police Department. And 14 years were over as the prefecture’s police to be unsolved greatest stain, and statute of limitations approached it. In 2002, Yoshinobu Mikami, an ex-detective who was assigned as the investigator of the “Rokuyon” case 14years ago, moves as a Public Relations Officer in the Police Affairs Department against his will. As a newly assigned Public Relations Officer, he was troubled with the relation between the reporters, new case has occurred. And that new case traced “Rokuyon” case exactly.