In recent years, with the continuous advancement of the battle against the Siren, humans have been beaten by the Siren in all aspects from the beginning to be able to compete with the Siren. The biggest role of this is that the girl ship girl who awakened from the historical warships is based on the absolute loyalty and strong combat effectiveness of the ship girl to the human commander. Only then can humans survive in the war with the Siren and gradually stand firm. However, with the progress of the war and the arrival of a more peaceful period, another problem also emerged, that is, the commanders with many ship girls under their command may be respectful, orIn order to curb the warlordization of the commander, the world government moved out the official supervisors a hundred years ago and forced each port area to be equipped with a supervisor. The supervisor was directly responsible to the world government. The commander of the port area did not have the command or appointment and removal power to the supervisor. In addition, the materials that were directly allocated to each port area from the world government were changed to the supervision. The commander had no right to control and supervise the distribution of materials. The commander needed to report the situation of the port area this week to the supervisor every week, and then conveyed by the supervisor to the world government.