Kasumi Hayami lives her life behind her earphones, donning a cold personality to keep people at a distance. She’s convinced that if anyone discovers her secret, they’ll inevitably drift away. But when she hears the enchanting voice of her schoolmate Aika Shirakawa, a girl who has spent her entire life being treated like a ghost, Kasumi’s solitude is turned upside down. Unfamiliar with the world of affection, can they learn what it means to be truly loved?