Social horror illustrator Li Li found that her shadow came to life and turned into a beautiful man who called himself Zhu Zhi. During the day, he was her shadow, quiet and well-behaved, letting her step on him. But every night, he would hold her in his arms, watch horror movies with her, scold the editor who made trouble for her, and even use his shadow to help her drive away thieves. Li Li gradually fell into despair, until one day, Zhu Zhi painfully told her: "When you can completely control your shadow, I will always