- Nino Arisugawa is a girl who loves singing and has an enchanting voice. She experiences two heart-wrenching partings in her childhood, one with her first love, Momo, who moves away, then after Nino befriends Yuzu, a young composer, she experiences another sad parting. Each of two boys made a childhood promise with Nino to find her one-day through her singing voice. Nino holds on to that promise and continues to sing.
Six years later, the three are now in high school. Nino reunites with Yuzu, but Nino also wants to see Momo again. Yuzu is a member of the masked band in NO hurry to shout. He loves Nino and asks her to be the vocalist of the band to help her reach Momo. Nino strives to improve her singing skills in an attempt to get attention of Momo who is now a professional composer. With music at the core, how will the love triangle play out?