A Destroyer KanMusu (Fleet Girl) and protagonist of the series. A newcomer to Chinjufu with no combat experience prior to transferring to the naval academy. She is assigned to the 3rd Torpedo Squadron.

An Aircraft Carrier from the 1st Carrier Division of the 1st Air Fleet. She is the pride of the fleet due to her past combat history, and an inspiration for Fubuki. Akagi engages enemy ships by firing arrows with her bow, which transforms into aircrafts piloted by fairies. She has a ferocious appetite inspite of her appearance.

A Destroyer and the first KanMusu Fubuki meets. A classmate and roommate of Fubuki, she is also a member of the 3rd Torpedo Squadron.

A Destroyer with a laid back attitude who has a verbal tic. She is a member of the 3rd Torpedo Squadron and a roommate of Fubuki.

A Light Cruiser who enjoys night battles. She is the eldest sister of Jintsuu and Naka. She is a member of the 3rd Torpedo Squadron.

A Light Cruiser and flagship of the 3rd Torpedo Squadron. She is the sister of Sendai and Naka.

A Light Cruiser of the 3rd Torpedo Squadron. She prides herself as the idol of the fleet and is the youngest sister of Sendai and Jintsuu.