Iaidō

The term Iaidō (居合道) refers to a specific style of kenjutsu that is concerned with the smooth, controlled movements of drawing the sword from its scabbard, striking or cutting an opponent, removing blood from the blade, and then replacing the sword in the scabbard.

The speed at which these techniques can be executed — the initial strike in particular — is such, that when performed by a skilled user, it can prevent enemy shinobi from forming hand seals (and thus ninjutsu), by exploiting the small opening that these movements create. This makes them highly effective against most shinobi and potentially, those of even Hanzō's calibre, if performed by one who has mastered the style, such as Mifune.

Combined with the god-like speed of a practitioner like Seireitou Hyūga, the Iaidō techniques appear to be capable of cutting through steel.

Sayotsu Uzumaki with his incredible speed and natural talent for Kenjutsu has taken Iaidō techniques to such tremendous levels that no other shinobi can reach.