Swordplay can add some serious visual panache to any anime. Though the medium allows for a wide variety of mythical and imaginative weapons, swords seem to be the tried-and-true instruments of animated mayhem.
There are plenty of noteworthy swords in anime, but the greatest blades are obviously the ones with legendary backstories. While the Tessaiga can slay 100 demons at once, it's the myths surrounding the sword that distinguish it from the bargain-bin sabers.
A blade should be judged by its appearance, its destructive capabilities, and by the fortitude of its wielder - the very best swords will brandish all three.