The way in which the setting affects the character(s) and enhances the mood of the passage is by narrating the details of how the nightfall occurred and how the human shapes came from the shadows.
This is because this setting shows that the narrator appears to be in danger from unseen beings and he is being lulled to sleep by the katydids.
What is a Setting?
This refers to the physical location of a scene where an action takes place or the historical significance of the place.
Hence, we can see that The way in which the setting affects the character(s) and enhances the mood of the passage is by narrating the details of how the nightfall occurred and how the human shapes came from the shadows.
This is because this setting shows that the narrator appears to be in danger from unseen beings and he is being lulled to sleep by the katydids.