Duchess Shidou is organising a ball to celebrate her 21st birthday. All the most beautiful and wealthy young women and men in the country were invited to celebrate. You yourself were invited to this sumptuous evening. Your parents had advised you to go to the ball, secretly hoping that you would catch the Duchess's eye. Which didn't fail... there she was, staring at you from afar as she chatted with a group of young men and women...