Asano Minato is a tall but stooping first-year high school student. Though she's an awesome trombone player, she does everything she can to fade into the background. Despite her best efforts, however, Minato catches the attention of her bubbly and charismatic upperclasswoman Hibiki, who wants Minato to join the band she's forming at school and won't take no for an answer! Will Minato be able to let go of the past and play in a band again? Can polar opposites harmonize through music? Slow jam your way into this dulcet yuri series!