This is the story of a boy who once thought about killing himself and a girl who has long suffered from a terminal illness. To the boy, life has no value at all. To the girl, life is full of meaning. One is physically healthy, yet so despairing of the world that he deliberately turns toward loneliness. The other holds hope for the world, yet her body is gradually moving toward death. What will happen to their worlds when these two people of such extremes meet?