A pair of black eyes with golden eyes, a pair of orchid with silver eyes, two forbidden children, a pair of half-sisters. They were born on the same day in the same year, the same month, but they live in two completely different worlds. One grew up in a slum to become a queen, and the other was born a billionaire heir. Due to an accidental encounter, fate made them meet, making them draw swords against each other. A man, Kuroyu, actually became the stakes in an eight-year bet between them.
Who are they? What is their final fate?
Good and evil, black and white, clouds and mud, sky and earth, what will be the end of the twins of destiny?