Lu Xiaoru was one of the female protagonists in " Katu ". Her first appearance was in the second chapter of the novel," A Murder Triggered by an Egg." In the novel, Lu Xiaoru was a girl from a poor family who was forced to leave her hometown. By chance, she got a magical egg that could give the holder special abilities. Lu Xiaoru also gained the ability to fight. The author described her in the second chapter as follows: "Lu Xiaoru is a petite girl wearing a tattered T-shirt and jeans that clung loosely to her body, making her look thin and short. Her face was filled with helplessness and confusion. Her eyes were empty, as if she had no interest in this world." Through this description, the author showed the image of Lu Xiaoru. She was petite, lacked confidence, and had no interest in life. However, after obtaining the magical egg, she began to have the ability to fight, which gave her new courage.