One day, she woke up as the beloved legitimate daughter of a marquis's household, only to find herself forced to marry a wastrel. No matter. As an assassin from the twenty-first century, she considers other people's schemes and harassment child's play. As for the prince she's supposed to marry... She looks at the man before her. He's pretty handsome, but arranged marriage is a no-go. She has to escape. But one night, just as she climbs over the wall, she runs straight into him as he's climbing over from the other side. Tang Xiaoxiao gives an awkward smile. "What a coincidence. The moon's lovely tonight, huh..."