On an April night in Tokyo, as the cherry blossoms are in bloom, blind university student Koharu Fuyutsuki spends time with the man she loves, Kakeru Sorano. In the three years since they started dating, he's shown just how much he cares about her, and even though Koharu can't see him, she can tell what a wonderful person he is. After all, Kakeru is the man who gave her a future. But just because they were gifted a miracle once, there's nothing to say it will continue forever. Pain and joy--and all the vibrant hues in between--color their lives like fireworks in the sky.