Tired of her overly long life, Jiu—a 5,600-year-old immortal human—voluntarily turns herself in to the government. After officially being recognized as immortal by the authorities, she is taken and confined by a mysterious organization called “Amon.” There, she’s ordered to interact with humanity through social media. Their true goal? To judge humanity based on her conversations and determine whether or not to wipe out the entire species. And so, Jiu continues to sit silently in front of a single PC, day after day... What kind of human society will be revealed through the words of a 5,600-year-old influencer!? A bold and socially charged SNS mystery from the eccentric genius Yosuke Ken!