Chigaeshi

"Such Force...It's absolutely horrible...It feels as if the Sky is falling upon my shoulders...To think the Uchiha are capable of this." -Muzai Kaguya

Chigaeshi is a powerful technique originating in the Mangekyō Sharingan eyes of Itami Uchiha. This technique has a direct connection to the Sharingan's predecessor, the Rinnegan, as it can use a variant of one of its Jutsu. As his Coming Soon is cast through his left eye, Chigaeshi comes from his right. So far, Itami exist as Chigaeshi's sole user.

Overview
Using his right eye, a circle radius appears around Itami's intended target as a massive amount of repulsive force is placed above the target, crushing everything beneath. Chigaeshi works similar to it's parent jutsu, Shinra tensai. His massive, menacing, and tainted chakra, gives Chigaeshi various properties besides it's crushing power, which he can control. Combining it with Killing Intent, Chigaeshi can instill a unique feeling of an ocean being held upon their shoulders. An increasing burden which usually destroys morale. Suddenly, Itami becomes bigger than he actually is, and hope is lost. .Chigaeshi is great enough to, without any visible effort from Itami, bring down the Raikage to his knees. He could continue to add pressure as Chigaeshi is an ocular technique that draws strength from ones Hatred and Chakra. He could use Chigaeshi to stop physical and energy attacks as long as he is fast enough to catch them. By rapidly activating this technique, he can continuously create a jackhammer effect.

Chigaeshi can have a prolonged attack or a rapid hammer. Itami has an option of slowly crushing an opponent or rapidly destroying them. At full power, it becomes unfathomable. Not just the strength or the size of it, there's a fundamental difference. It becomes thick, so dense, that it doesn't even feel like gravity at all. It feels almost as though there's an ocean above. Chigaeshi, unlike Shinra Tensai, is visible. Due to coming from Itami's Curse of Hatred, his Chigaeshi gives him a radiating purple aura which grows as he increases pressure.

Drawbacks
The Mangekyō Sharingan is a dōjutsu that, with continuous usage, burdens the user with the loss of their eyesight. Since this is the source of Chigaeshi, using it in rapid succession puts Itami's body at risk as well. And through his Jack Hammer effect, will result in a powerful headache or migraine. Without control, his gravity well will increase until it is out of control.

Trivia

 * Idea came from Bleach concept of Reitsu.