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 ...

Yuki is a typical college student, whose world revolves around her friends, social media, and the latest sales. But when a chance encounter on a train leads to her meeting friend-of-a-friend and fellow student Itsuomi-san, her world starts to widen. But even though Itsuomi-kun can speak three languages, sign language isn't one of them. Can the two learn to communicate the budding feelings between them?