In a post-apocalyptic world dominated by the so-called "Numbers," each human will certainly have their identification branded with their very own "Count," which might specify any number related to their life. May it be one's strolled distance or quantity of compliments provided to them by others, this Count might lead them to the abyss when it has actually dropped to absolutely no. In the year 305 of the Alcian schedule, Hina has actually acquired an objective from her Mother, whose Matter has actually decreased to no, to search for the Legendary Red Baron. In her experience, she fulfills a half-masked swordsman named Licht that tries to hide his identity, as he is referred to as a degenerate for having an incredibly low Count.