Lord of Vermilion: The Crimson King: Season 1

Tokyo, 2030. A high-frequency resonance is suddenly heard in a suburban area, and at the same time, the entire town is shrouded in a red mist. All living things that hear the sounds, human and animal alike, lose consciousness.

The phenomenon is assumed to be an unidentified virus, so due to fear of a spreading epidemic, Tokyo is blocked off from the rest of the country. About six months late...