A collection of short stories. The title story: Moriki Naoya is a thoughtful, frail child, left behind as the world moved on. One summer in high school, he meets Takahashi, a boy who lost his dreams. As the summer moves on, Naoya must either move with it, or let the world pass him by again… Chapter 3 of this manga ("I'm Not Fit to be a Detective 2") is the sequel to a short story of the same name in the manga "Tsuki no Sabaku" (chapter 2).