SDDE-568 Dear me in high school, The Mayu from the art club, whom you had liked for so long and dated, had been involved with many of the boys in your class. Azumi Hina

In the winter of his fourth year of college, Takao reunites with his classmates for the first time in five years at a class reunion. Still without a job offer, he attends the reunion with mixed feelings. There, he also finds his former girlfriend, Mayu. Takao then learns a shocking truth: Mayu had been involved with many of the boys in their class. A side of her he never knew.