Set many years in the future, the narrative features "Rhyme," a virtual fighting game that has become immensely popular, alongside "AllMates," which are convenient AI computers owned by people. Aoba leads a mundane existence, working at a junk shop and residing with his grandmother on Midorijima Island. He neither participates in Rhyme nor belongs to a gang, unlike his friends. Yet, as rumors circulate about people vanishing, Aoba finds himself compelled to uncover the island's mysteries to safeguard his daily life.