Hotaru is a 16-year-old high school first year who has always been ambivalent about love, preferring instead to have a lively life with her family and friends. So when she sees her schoolmate, Hananoi-kun, sitting in the snow after a messy, public breakup, she thinks nothing of offering to share her umbrella. But when he asks her out in the middle of her classroom the next day, she can t help but feel that her life is about to change in a big way.