An Interstellar Detective Who Doesn't Want to Be a Magical Girl

The interstellar stage, if you have any work, come and do it! New New York Star City, the freest city on earth. There are not only aliens here who hold your little hand like a pervert and insist on making a contract with you to become a magical girl. There are also various "black technologies" of alien civilizations. Brother, if you ask, have quantum tunneling, space folding, and controllable nuclear fusion been mastered by aliens? No~No~No, Bro. These are all outdated, and alien children usually play with them as toys...