A Family of Complementary Characters

The world thinks that we repair the world, but in fact we are just "cartridges" for God, slaves from generation to generation, and the father's debt is paid by the son. My father had just died, and the creditor asked for my severed arm to pay off the debt, and the gods judged that I was a "typo" that must be erased. Force me to fix my fate? OK! I raised my hand and added one word to this perfect world - death! The world died today. I won't pay back this bad debt, now I write the script!