I Work as a Judge in the Underworld

Yun Rusu figured that being robbed and killed was bad enough. Then a man in black and a man in white appeared before her. The man in white held up a banner, its cloth deathly pale, its top cut into a triangle, and the words “Soul-Guiding Banner” written across it in bold brushstrokes. Since the Underworld existed, she might as well get reincarnated properly and be a beauty in her next life. She never expected the King of the Underworld to insist she stay on as a judge. Is the Underworld really this casual about things?