In 2105 Japan, humanoid androids called hIE have become part of daily life, and teenager Arato Endou is one of the few people who treats them as more than tools. When a strange fall of cherry blossoms sends the city's hIE and machines into chaos, Arato meets Lacia, an hIE whose true nature sets her apart from every other machine around him. This manga adapts the same story behind the Beatless light novel and TV anime.