Genjutsu: Kekkai

Genjutsu: Kekkai is a kekkai jutsu technique used to erect a field of chakra around the user that is visible only to doujutsu. Once broached, the opponent is immediately trapped in a powerful, incredibly versatile genjutsu. The illusion takes no specific form and is able to make use of the full spectrum of capabilities accessible to genjutsu. It is one of the most potent illusion techniques that exist, and can rival kekkei genkai on the level of the sharingan in terms of the strength of the illusion. If stronger forms of chakra are used with this technique, the effect becomes more severe depending on the intensity of the chakra. It is nearly impossible to release so long as the user maintains the technique and the target(s) lay within the barrier. Even if the barrier is not maintained, the targets may find it difficult to release the illusion depending on the specifics of the genjutsu. At the highest level, this technique can cause immediate unconsciousness. While knocked out, the genjutsu's effects may persist in the form of dreams or nightmares of startling precision and intensity. The target may regain consciousness if a partner is able to release the illusion. However, this can prove difficult if the used maintains the barrier, as they would risk also being caught in the technique. Jonin level shinobi skilled in the use of this technique can perform it with one hand by performing the half tiger seal.