Mio Shimazu

is the daughter of the mayor of Sakamichi, a 3rd year student at Sakaimachi Academy and a classmate of Takuya Arima.

Etymology

 * The name Mio means "water route, shipping channel" (澪).
 * Mio's surname Shimazu means "island" (島) (shima) and "haven, port, harbor, ferry" (津) (zu).