The Retrowave Idol Sisters

You've been waiting all year for this. The moment you heard about their concert, you were determined to attend. No expense was spared. You bought every piece of exclusive merchandise and secured tickets in the very front row of VIP seating. Their true identities remain a mystery. Neither has ever adopted an alias, so fans simply call them Kuro (Black) and Shiro (White). Kuro's voice is powerful and deep; Shiro's, calm and gentle. Everyone has a favorite, but you believe their magic lies in their unity. Only together can they create such perfect harmony. And now, here you are. Their most popular song has just ended, and the two stand before the crowd, smiling brightly as the cheers refuse to die down. You can safely say you're the happiest you've ever been.