Ichijo Hotaka sees youth as fleeting and meaningless—until he meets Ao Hoshikawa, a girl who challenges his detached outlook. After finding his discarded essay, she pulls him into unexpected conversations about life, writing, and the small mysteries around them. As their paths intertwine, Ichijo begins to question his own isolation. In the quiet moments of playgrounds and rain-soaked streets, he wonders: can youth be more than just something to endure?

Blue and Endless Rains is a story of fleeting connections, introspection, and teenagers struggling to define themselves in a world that demands they fit in. Through fragmented moments of honesty, they learn that even the blandest sky holds a shade of blue worth looking at.