An alien asteroid is about to hit the earth, but is successfully intercepted and blown to pieces in the Earth-Moon system. These fragments passed through the atmosphere and were scattered all over the world in just one week - and this was the origin of the "ship girl core".
The complete fragments are called shipgirl cores, and the incomplete ones are called auxiliary cores. By adding various materials to the core, it can be activated and beautiful girls will be born. These girls can communicate with the different dimensions they carry and summon spaceships that have already been burned into the core - but only a complete core can summon a complete spaceship with all functions, and its holder plays a role similar to a "captain".
Incomplete auxiliary cores can also activate girls, but they will be divided into different categories according to their retained functions: fire cores, detection cores, energy cores, etc. Ship girls born from these incomplete cores need to access the ship girls with complete cores through permissions, so as to obtain the qualifications to control various areas of the spacecraft. At the same time, humans who activate the core also awaken the corresponding "admiral network" due to brain development - depending on the core type, a commander network, a firepower network, a detection network, an energy network, etc. Will be formed. By increasing the strength of the network, the various attributes of the ship girl will be improved.
People and ship girls work together to make the spacecraft fully functional.
It is this system that has brought mankind into the magnificent era of space navigation.
