"There is no cure for her". After those devastating words were said, Satoshi could only stay with his girlfriend in her last moments, being unable to do anything to save her.
Though before leaving this world, she gave him a novel, as a birthday present, which she wrote during her days in the hospital.
While reading it Satoshi finds in those pages a world of fantasy and heroes, but he never could have imagined that he would finally live in one of those fantasy worlds. Satoshi wonders if he will discover not only adventure but also a chance at finding love once again.