Iai

is a power possessed by Nanashi.

Description
"Iai" allows Nanashi to cut almost anything with a single swing of his sword. Thus, it can easily cut an Earth Crawler, despite its protective mucus, and even split an explosive dark beam in two.

Techniques

 * An instantaneous vertical sword slash that creates a slicing shockwave against an opponent. The attack was potent enough to finely slice the breathed-out energy blast of a Gray Demon and kill the demon itself in an instant.
 * With a simple horizontal swing of his sword, Nanashi generates a slash wave capable of cutting through several "buildings" of the Demon Realm around him.
 * Nanashi adopts a stance, his sword held out in front of him, pointing down, before launching a series of flying slash waves.
 * Nanashi adopts a stance, hiding the length of his blade behind his body, only the pommel visible, before performing an incredibly fast, forward sword swing that launches a powerful slash wave, which was successful in destroying Lancelot's bow.
 * Nanashi creates a giant cross of light in front of himself, visible from a far distance, before performing an almost instantaneous X-shaped slash, unleashing it as an immensely powerful attack. Described as his strongest and most secret technique, "Setsuna Juji-sei" was powerful enough to once gravely wound Arthur Pendragon.

Trivia

 * "Iai" is an abbreviation of the word, which is a combative quick-draw sword technique from Japan, originating from the 8th century. This art is evident from Nanashi's attacks, as he swiftly sheathes his blade after each attack.