After years of changes in the world, a powerful power generation system covering the near universe has been built outside the earth. The sons of the five largest families in the Federation have learned the elemental power of their families since childhood. After entering the academy, they learned military theory, entered the ruins of super-ancient outer space civilization, and obtained 4 completed aircraft bodies and 11 non-Earth-powered engines. Through the power of their families, they created a powerful preservation force...
Super beautiful, worth a look