Kingdom Hearts: Birth by Sleep

Long before Sora was chosen by his Keyblade, the worlds' safety lay in the hands of the true Keyblade Masters. Three youths - Terra, Ventus and Aqua - have been training long and hard under Master Eraqus to prove that they, too, exhibit the Mark of Mastery. But they will soon find themselves in the middle of a crisis affecting worlds far beyond their own - just as another Keyblade Master, Xehanort, goes mysteriously missing. Three friends, three destinies. Everything will link back to the beginning.

Long before Sora was chosen by his Keyblade, the worlds' safety lay in the hands of the true Keyblade Masters. Three youths - Terra, Ventus and Aqua - have been training long and hard under Master Eraqus to prove that they, too, exhibit the Mark of Mastery. But they will soon find themselves in the middle of a crisis affecting worlds far beyond their own - just as another Keyblade Master, Xehanort, goes mysteriously missing. Three friends, three destinies. Everything will link back to the beginning.