Two girls playing a duet about letting go, while learning they have to let go of each other. Every frame is composed like someone who understands that silence between notes matters as much as the notes themselves. The fantasy sequences drawn in storybook style aren't decoration, they're Mizore and Nozomi's conversation happening in a language words can't reach. By the end, you understand that the blue bird was never about the bird. The pacing will feel glacial if you're not ready to sit with two people who barely speak and say everything anyway.

Two musicians stand at a crossroads. Mizore plays oboe, Nozomi plays flute, and they have been close friends since childhood. As seniors in their high school concert band, they face their last competition together, where the chosen piece, Liz and the Blue Bird, gives the oboe and flute a difficult duet. As graduation approaches, the pressure of the performance strains something between them. Their playing sounds disjointed, and talk of the future opens a quiet rift. Can they close that distance before they have to perform together? Woven through their story is the fairy tale of Liz, a lonely girl, and a blue bird who appears as a young girl, shown in a storybook style. It echoes the two friends' struggle and sets itself against the realistic look of their school life. The film moves between these two worlds, drawing meaning from the contrast between fantasy and reality. The result is a quiet, introspective drama about friendship, music, and an approaching parting.