I Don't Want to Become an Immortal in the System

Jin Cao, an extremely ordinary farm girl, was parasitized by the system because her grandfather passed away. —— Golden Grass: What? Want me to become an immortal? No, no, no, don't become an immortal, just give me your grandfather back. —— Golden Grass: What? Let me save the world? No, no, no, I'm just a passerby, please let me go. But everything is doomed and no one can escape. —— This is a Buddhist system that does not assign tasks. It seems to be more than just a system.