"Charlotte" is a "tear-jerking" drama that builds a world view based on science fiction and fantasy, blends daily campus life and pure love. The plot tells the story of the protagonist Yuu Otosaka who lost his father before he met his sister Ayumi Otosaka. When he was 14 years old, he became a high school student and met a girl named "Kobe Kotori" in the school library. Xiaoniao is a girl with super powers, and her ability is time control. The story between the two begins.