They say that there is a secret arena somewhere in Ohtori Academy. From there, and only from there, you can see a castle hanging suspended in the sky, a castle that nobody has ever been inside. They also say that, on some afternoons, select students gather there, take up swords, and fight against each other for something incredible - the power to bring about the world's revolution. Of course, that's just a rumor. Isn't it?
This game is about a cast of original characters who have been selected to compete in the next incarnation of the duel games at Ohtori. They have been recruited, once again, by the Ends of the World; they have been promised the power to revolutionize the world––and their heart's desire––should they win.