Radiant Historia

In the midst of an unending war for dominance between two super-powers, Special Intelligence Agent Stocke is assigned to a routine escort mission that goes horribly awry. However, wielding a mysterious book called the White Chronicle, Stocke discovers a way to travel to the intersection of time itself: Historia.

With this power in his hands, he must travel back and forth through key events and an entirely alternate timeline to right the world's ill-fated course.