Ever since he can recall, Makoto Nakazono has possessed the ability to see grim reapers observing individuals shortly before they die and guiding their souls to heaven. He understood long ago that no one would believe him if he spoke of this power. Because he cannot change people's destinies, he does his utmost to act as though he notices nothing unusual. Everything shifts when a reaper at Makoto's high school addresses him, asking why he never intervenes. Upon discovering that the reaper is present for his best friend, Hazuki Horiuchi, Makoto begins to question whether he can postpone her grim fate, even if only temporarily.