How does Yukio Mishima use imagery in Fountains in the Rain?

With great skill, the imagery set forth in the title is worked into the fabric of the story; in a central set piece of description, the fountains reveal themselves as a symbol of the shifting impulses— ambition, aggression, sexuality—to which the hero is prey, and which are liable at any moment to be negated by the monotony of everyday life—the rain—and its obligations.