Iruma (5), a boy raised in the slums, is coincidentally taken in by Sullivan, the financier of the mafia Babyl, and becomes the boss of Babyl nine years later.

And now, Iruma and the organization members attend a masquerade ball where an auction is held to obtain a certain item.

Upon entering the ballroom, a massive chandelier and golden ornaments shine dazzlingly inside, and a gentle waltz melody echoes between the red velvet curtains and marble pillars. The long tables are filled with fine wines, extravagant dishes, and elaborately decorated desserts, their sweet scent drifting faintly through the air.