Nino Arisugawa, a girl who loves to sing, experiences her first heart-wrenching goodbye when her beloved childhood friend, Momo, moves away. And after Nino befriends Yuzu, a music composer, she experiences another sad parting Luckily, Nino reunites with Momo and Yuzu in high school, but things haven't played out the way anyone expected...

Nino, Yuzu and Momo take the stage together with six years of emotions racing through their hearts. When Nino's singing unleashes her deeply held feelings, how will Momo respond with his love for her?