Quick Travel: Me and My Illegal System

(Shuangwen + female protagonist + space + no CP) Before An Ran was about to die, he encountered a creature calling himself System. As long as you change the fate of yourself or the world, you can gain everything, including money, lifespan, and skills. After being bound to the system, An Ran entered the small world, only to find that the system had malfunctioned and could only enable stand-alone mode. It doesn't matter! An Ran himself can also play happily in the small world. An Ran didn't know the truth until the system woke up. "Surprise! The illegal traveler is actually me!!!" "About the fact that every time my system enters the small world, it will be beaten by heaven" "I act as a bug in the front, and the system acts as a virus in the back" The first world: a junior sister who practices immortal literature The second world: cannon fodder in the supernatural world The Third World: Emperor Development Plan ...