In Fumihiro Kuki’s wealthy family, it’s tradition that a patriarch, when reaching the end of his life, will beget one last child to dedicate to causing misery in a world that cannot be controlled or saved. Eleven-year-old Fumihiro will be specially educated to learn to create as much destruction and unhappiness in the world around him as a single person can. But as his education progresses, he begins to question his father's mandate.
He has no family, no friends, no connections. But he does have a past, which finally catches up with him when Ishikawa, his first partner, reappears in his life, and offers him a job. Only the day after the job does he learn that the old man he tied up was a prominent politician, and that he was brutally killed after the robbery.