Tokyo in 2030. In a suburban area, suddenly a high-frequency resonant sound is heard, and at the same time a red mist shrouds the area. Anyone who hears the sound, be it human or animal, loses consciousness. The government estimates that it might be an unidentified virus, and fearful of an epidemic, blockades Tokyo and moves its base to Osaka. However, six days after the incident, those who lost consciousness from the sound awaken for no apparent reason. Those blockaded in Tokyo slowly start to get the city functioning again, but after that day strange incidents start to occur at the blockade border. Those who have awakened a hidden blood power arise, are drawn to one another, and must face a cruel fate. – ANN
Streaming: Crunchyroll
Episodes: 12
Source: Game
Episode 1 Summary: Chihiro is a typical college student who lives with his adoptive family at their dojo. Though he’s a good swordsman, he has an aversion towards aiming for a killing blow, something his instructor (and adoptive father) warns him about repeatedly. Kotetsu, the instructor’s son as well as Chihiro’s friend and adoptive brother, dreams that the two of them will take over the dojo together someday. While they’re both on their way to university, a terrible noise rings out across the city. People begin to collapse in the street as the noise permeates the atmosphere.
Chihiro awakens in a hospital bed, where the doctor (and his moody nurse), inform him that he’s been comatose for the better part of five months. He’s in fact the last of the people affected by the incident to wake up. While he was asleep Chihiro dreamed of a void space filled with spinning architecture and a mysterious young woman with a parasol, but when the doctor asks him about his dream, he finds the images have begun to fade. Once Kotetsu retrieves him from the hospital, Chihiro begins to learn about the things that happened while he was asleep and how Tokyo is now isolated from the rest of the country by a mysterious red fog. When the two return to the dojo, they once again hear a terrible sound ring out – and discover a terrifying monster that has absorbed their father!