One rainy night, a girl named Saki is rushing to a piano lesson when she crashes into a beautiful, dark-haired stranger, dropping her sheet music in the process. Saki stutters an apology, but the stranger simply hands back her sheet music and leaves without a word. Saki begins her first day of high school the next morning, only to find the stranger from the day before sitting in the desk next to hers. Saki soon learns that the girl's name is Kanon and that she is not quite completely deaf, but very hard of hearing. Though Kanon needs to be close to people to read their lips, her seemingly icy demeanor has left her isolated from her classmates. Through one kind gesture, Saki slowly begins breaking down the walls around Kanon, even as she feels something new blossoming within her.