Nanase Watanabe does not belong in a club. She belongs in a quiet, secluded area in which she can be her usual cold, socially-awkward, child prodigy self. But, that all seems to change when she is accepted into Otogi Academy, and thrown right into the arms of the Otogi Bank. Because, apparently, cold, socially-awkward child prodigies can be of use to such a corrupt place. And Nanase is not thrilled in the least.