Earth Release: Reduced Mass

Using Earth Release on themselves, the user reduces their own mass to a negative state, allowing one to become intangible.

Its only drawback is the fact that th cooldown rate is twice as long as its activation time, and it can only be activated for at most, one minute.

Chiyoko displayed use of this technique before the post was reverted in its respective roleplay.

Trivia
This technique did debut in Sandstorm of Souls, but User:Doom149 wanted the author to retract the edit in favor of a technique that doesn't make a unique technique like Kamui look like childsplay.