Nagi is one of the two central characters in Ghibli o Utau Sono 2 – Fū to Nagi no Monogatari, a live-action short series that accompanies the tribute album Ghibli o Utau Sono 2. She is described as an ordinary girl. Her primary role in the story is to meet a mysterious girl named Fū, and the narrative follows their encounter and eventual separation. The series is composed of thirteen shorts that are presented in a non-sequential order, meaning Nagi's experiences are shown through fragmented moments rather than a linear progression. Her relationship with Fū is the core of the story, although the nature of that bond is not explicitly detailed in the available material. No specific background, personality traits, motivations, character development, or notable abilities are recorded beyond her being an ordinary girl who crosses paths with Fū and then parts ways.