In the present, Japan is under assault by murderous creatures known as Aragami whose origin and purpose remain unknown. The fate of Japan and the world itself lies with one young woman named Momiji who bears the burden of the Kushinada -- the one who must be sacrificed to silence the Aragami forever. With the help of Mamoru Kusanagi (a human and Aragami hybrid), and an agency filled with firepower-toting bodyguards, Momiji must use her Aragami-sensing powers to help save mankind; but will she ultimately have to lose her own life to save the lives of so many others?
One day a light descends from the sky and splits into the ideal girls of Takeru and Ryou. That is where this gentle and vaguely romantic story about our ugly and beautiful world begins. Soon enough the story plummets into the secrets of global extinction and the meaning of life. Everything in this world that is beautiful has something ugly in it, and that ugliness is part of the secret of its beauty. Even for romance this is true...
Kamui has returned to Tokyo with a traumatizing past, but he is not the only one. Many people are returning to Tokyo for the same reason: they play a part in the End of the World. The Dragons of Earth and the Dragons of Heaven now must fight for the destruction or safety of the world. But is this troubled Kamui really the key to saving the world?
In the present time, the meteorite-based M-34 virus is being spread at a horrific pace: infecting thousands, and mutating their bodies into alien-like creatures who destroy everyone in their path. While NOA -- an elite team of cybernetic soldiers -- work to contain the threat, a new weapon named Ai is being trained to destroy the virus once and for all. Unknown to all are her true powers -- especially once she falls in love with NOA member Yuji. Time is running out.. who will inherit the earth? The virus, or humanity?