Full-time college student Kimimaro works his fingers to the bone, but he’s still flat broke. That is until an odd fellow invites him to the Financial District, a parallel world where he can increase his cash flow - if he’ll invest his future as collateral.

After being hurled into the Financial District and meeting his asset, Mashu - a petite girl with candy-striped antlers - Kimimaro is forced into a deal against an opponent who wastes no time launching staggering attacks with his monstrous asset.

When Kimimaro's second deal is a desperate wager against one of his own professors, he gets a lesson on how devastating the consequences can be in real life. Later, Mikuni makes Kimimaro a tempting offer to join his Starling Guild.

Kimimaro’s new strategic approach to deals pays off with a decent winning streak. But when his next opponent offers him a bribe to forfeit, the young Entre is caught in existential conflict over his investment in the Starling Guild.

Entire countries go off the map or endure devastating changes as a chain reaction – called “C” – sweeps across the Asian continent. A desperate move to save Japan is not without its deficits, and Kimimaro discovers another connection with his dad.