I don't know if it counts as a time-travel novel, but I'll leave it at that. The protagonist is an ordinary high school senior, but she has been troubled by strange dreams since she was a child. It was the same dream until she transferred to Aodo Middle School, and her dreams began to change. A series of strange characters appear next to the protagonist, and the story unfolds. The protagonist's loved one also makes an appearance, which puts the protagonist into trouble (both physical and mental). The dream world and the real world alternately switch between the protagonist's body and reality. Can the protagonist achieve her wish? What is the connection between the dream world and the real world? Who is false and who is true? Everything will have an answer, as long as you keep reading.