Kuniumi

Kuniumi is a Mangekyō Sharingan dōjutsu that creates what has been described the strongest sword in the world. This technique is said to represent the "Creation of the Land" (造成, Zōsei) and is the counterpart to to Kamiumi.

Trivia

 * Anybody may use this technique for an Uchiha OC with a Mangekyō Sharingan.