Kimimaro is a scholarship student with two jobs, whose only dream is to live a stable life. One evening, on his way home from work, a strange character appears and offers him the chance to win large sums of money on the sole condition that he repays the loan. Kimimaro, a little reluctant, finds himself drawn into a strange world known as the financial district, and has to fight alongside Mashu, his Asset (magical beings helping entrepreneurs in their confrontations called Deal), to avoid bankruptcy.