On a certain day during the rainy season in fourth grade, Subaru meets the ghost of a young woman who calls herself Aihara Kotona and claims to be from the future. She seems to know him, somehow, and she tells him, "I want you to not become friends with Aihara Kotona, the transfer student who's arriving today." But, young Kotona gets assigned to the animal-raising committee along with Subaru, and they grow close nevertheless.
Even after that day, the ghostly young woman continues to appear befo...
