Kuebiko

Kuebiko (久延毘古 Long Stretch Help Old) is a unique technique formed in the mutated version of Izumo Uchiha's, taking its roots deep within , much like the jutsu of the infamous Mangekyō Sharingan.

Overview
As a consequence of the implementation of and  chakra into the body of Izumo Uchiha, his sharingan, which had not been entirely developed, attempted to rush past the stage of Mangekyō and Eternal Mangekyō, abandoning its natural progression through the awakening of Uchiha's "special chakra" via the means of their. In essence, it attempted to skip to the Rinnegan, which turned out as a partial failure, for Izumo at the least.

In a manner of speaking, Kuebiko utilizes Izumo's own affinity for in conjunction with his Sharingan's heightened affinity to the Yin release in order to shape his chakra into black waters. These black waters are regarded quite highly for their continual destructive ability; attacking various targets with absolute force and little effort required. Likewise, these black waters are thought to be unable to be evaporated or frozen unless specific methods or used; though, a product of his spiritual energy not being at the level of a Mangekyō user, they can be dispelled with relentless and powerful assaults with high-level techniques.

However, that's only the initial part of Kuebiko. The second part, and the most dangerous of them all, is the ability for Izumo to concentrate this chakra into a malleable structure surrounding him. Utilizing one of his Sharingan as a basis to form the initial Kuebiko waters, while the other uses shape manipulation to forge it around his body, Izumo is capable of making a malleable offensive and defensive weapon that greatly enhances his natural Taijutsu prowess. Likewise, it is only a short range and has great chakra expenditure. Thus, he uses this only in times of great need.

Trivia

 *  (久延毘古) otherwise regarded as the Yamada no Sohodo (山田之曾富騰, "Mountain Paddy Field's Once Wealth Rise") is a kami of knowledge and agriculture, who is represented as a scarecrow who cannot walk but has awareness. This is depicted in the manner that, while scarecrows are thought to be potent illusions, they are not real. Likewise, this is reflected in the manner that this technique works, in that, while it is a powerful technique that employs Yin release, the level of it is not as great as the "true" manifestations of Yin release.