Become a one-time character in a comic

Yu Xiaoan opened her eyes and found herself in a campus youth comic, where she had been changing identities, each of which was a one-time character that only appeared once in the comic. In this two-dimensional world, she never felt real, because the protagonist really glowed, and there were little flowers around him, but he really lived in this world. Occasionally, she helped a classmate named Gu Mingxing, who was not a character in the comic. He remembered her, and he was the only one who could find her in this world. No matter what identity she became, Gu Mingxing could find Yu Xiaoan. But it was just a plot in the comic, so the comic...