Since ancient times, the world has been divided into yin and yang. There is yin within yang and yang within yin. They restrain and nurture each other, maintaining an eternal balance. Everything, people and things alike, has both good and bad sides, and everyone has the right to choose what kind of person they want to become. But if you want to stir up trouble, you’ll have to ask the clerks at the Yin-Yang Office whether they’ll allow it. They’re all hardworking wage slaves, so who would want to make life difficult for anyone? Unless you’re the one who starts it!