Miku Hatsune is an 11-year-old girl living in Sapporo, Hokkaido. She operates as a Shinkalion Driver for the Shinkansen Ultra Evolution Institute's Hokkaido Command Office, piloting the H5 Hayabusa unit. Her character design and name draw inspiration from the Vocaloid software persona, but feature a distinct spelling—発音ミク (Hatsune Miku)—instead of the Vocaloid's typical 初音ミク, representing a deliberate adaptation within the series' universe.