Slay the Gods: My Cheat Is Just a Little Overpowered

This is a brainless power fantasy, and the writing isn’t great. Read at your own risk, and please don’t come after me. The pairing is Wang Mian. One dark and stormy night, I was on a mission as a mercenary when I slipped and fell to my death by accident? (Not sure.) Some thing calling itself a System said it had brought me into the world of a novel called Slay the Gods. I’ve never read it. Who’s the male lead? No idea. But I get to become a god’s agent for free from the start! And it even gives me a Forbidden Ruin. Who wouldn’t take advantage of that? What if my Divine Ruin is a bit weak? No problem, I have a System. What if I can’t beat the gods? No problem, I have a System. What if I can’t save people? No problem, I have a System. Top-grade pills, high-level divine weapons… The System gives them away like it’s nothing. Let’s see how the heroine takes her System and turns this world upside down. A highly intelligent, incredibly strong, steel-hearted straight-shooting heroine x a highly intelligent, responsible hero with a bit of a scheming streak