The Causal Correction Bureau is suspended in the narrative sandwich between countless novel worlds.
There are no gods here. There are only a group of people called "doers" who will return to the most critical node to change a very small thing before the villain in the novel world completely darkens.
This is not a story about "rescuing the villain."
This is a story about "when a person thinks there is only one way to go, appearing next to that road makes him see the existence of another way."
You don't have to make sure he goes right.
You just need to let him know - there is another way.
Then back off.
Let him choose.
Concept: Everyone has an unclosed gap on their way to darkness. The so-called change is just sitting next to that gap for a while.