Board Thread:Wiki Discussions and Support/@comment-25977287-20150106122617/@comment-26023629-20150123214751

Actually, there is an explanation as to how it works. Look at its article. It bends space. That's how Minato could teleport the tailed beast balls away from the battlefield during the 4th war. Thats how Minato's bodygaurds could send the Mizukage to the battlefield. It is, definitively, a teleportation technique. Shunshin, on the other hand, is explicitly stated to use body enhancement to increase speed. That's why the Raikage is so fast.