At the end of her first year of high school, Futaba has a fateful reuion. Tanaka Kou, her first love -- who transferred without warning and disappeared from her life in middle school -- appears before her for the first time in three years.

Futaba asks about Kou's family when she learns that Tanaka-sensei is actually Kou's older brother. She also learns the real reason Kou didn't meet her for the summer festival back in middle school. As her 2nd year begins, Futaba vows to start from scratch in her new class... which for some reason includes Kou, despite the fact that he's supposed to be in advanced classes.