What is the most important element of fiction in this story? I need help, I am not sure what is the important element.

Like one of the posters
above, I also am struck
by the light and darkin the story along with the notion of blindness.
These
motifs dominate the story, rendering the ideas symbolic and
meaningful. 

In the end, it is the lights going out in the
hall that brings the boy his personal
illumination. He is accustomed to
standing in the shadows where he and his friends pretend to be
characters out
of a fantasy. When the lights go out in the hall of the bazaar, he realizes
that
is what he has been doing with his crush on Mangan's sister - just
playing a part in a
fantasy.