Conditions for Receiving Bounty: Deliver the brain of a wanted criminal in possession of illegal Somadea to the authorities. Whether the target is alive or dead... is irrelevant. The year is 2099. Humanity has advanced, overcoming all injuries and illnesses through the development of Medical Android Technology known as "Somadea." However, alongside the advancement of Somadea, crimes involving the misuse of this technology have rapidly increased. Somadea grants physical abilities far superior to those of normal flesh and blood, and by illegally modifying it, Somadea can be misused for criminal purposes. To combat these Somadea-related crimes, the government established the Bounty Hunter System. Civilians registered as bounty hunters are permitted to kill illegal Somadea users designated as wanted criminals by the police. In return, they are rewarded with large sums of bounty money. In this unforgiving world, Ubu Kamigori makes a living hunting down criminals as a bounty hunter. But one day, when she returns home from a job, she finds the man with whom she shares a sordid history waiting there—Mr. Elegance. And so, her destiny begins to unravel. A tale woven by mechanical girls and the smell of gunpowder smoke, this suspenseful action begins!