Jikūkankōtai

An advanced form of spatial manipulation granted by the Dimensional Path. that is capable of allowing the user to change the very dimensions of their body, allowing them to achieve a variety of effects. It also allows one to create dimensional barriers.

Overview
Jikūkankōtai (時空間交代; Literally meaning "Dimension Shift") Allows the user to shift their body between dimensions, achieving a plethora of effects in the process, though some have limits thei r application and power. It includes shifting from and between 0-D to 4-D space. Another feat it grants the user is the creation of dimensional barriers and the linking of dimensions. Through this, the user is capable of creating dimensional boundaries in the background that are completely unnoticeable as the blend in with the space around it; simply put, the user can erect these barriers without them being detected by the opponent. If shattered, the occupants are instantly put in another dimension without need for travel. By applying this method to themselves, the user is capable of making fully functional copies of themselves that are incapable of being seen through, even by the likes of dojutsu, though if sufficient force is applied, as determined by the user, it will shatter, giving away the technique.

Tiers of Jikūkankōtai
Shifting top the Zeroth Dimension, making themselves infinitesimally small, granting them invincibility, and making themselves undetectable and imprecievable by all means, though as a result, they can't move.
 * Reidai Jikūkan (零時空間; Zeroth Dimension)

Shifting to the First Dimension, making their body nearly invisible and extremely flexible, allowing them to dodge attacks with extraordinary ease. The user is also able to fit through small spaces, regardless of size.
 * Shodai Jikūkan (一時空間; First Dimension)

Shifting to the Second Dimension, flattening themselves on the ground, against wall or flat surface, making confining them next to impossible. The user can also use their body as impossibly sharp blades. The user is also capable of using their two dimensional body offensively, wrapping around their target to hold them. Despite their 2-dimensional form, in this state, their body possess supernatural durability.
 * Nidai Jikūkan (二時空間; Second Dimension)

Shifting to the Third Dimension, thus turning to normal.
 * Sandai Jikūkan (三時空間; Third Dimension)

Shifting to the Fourth Dimension. This form grants the user an extra spatial dimension, "W", alongside the normal X, Y and Z axis. As a result, they can't be bound by three dimensional objects, achieveing intangibility, while the user themselves can still interact with 3D objects and people. It also makes the user imperceptible to people within 3D space for as long as the user is within utilizing the fourth dimension, such as how Obito Uchiha] was while using Kamui. Utilizing the Fourth Dimension, the user can literally cut through dimensions, via transitioning from the 3rd to the 4th dimension, akin to that of a saw. By shifting the blade of space, or the blade of a sword from the third dimension to the fourth (or another) and back like a saw, and at the same time transitioning the blade through the target, such an effect causes the user to "delay the target's existence from the dimension". The blade phases through the target while in a higher dimension, and then because no two things can exist in the same place at the same time in the same dimension, this causes the targeted object to be destroyed by the blade without any resistance. Anything caught in the tear will be bifurcated, and the blade cannot be blocked nor deflected by any means due to its nature. Experienced users can also use these "blades" to open and close holes, even in other dimensions and space-time techniques, making it an all-around useful technique. At any point in time, they are able to bypass physical and spiritual barriers, regardless of nature without suffering harm or ill effects. The user is also able to alter how other beings precieve them, making them nearly impossible to tell from another individual or object.
 * Yondai Jikūkan (四時空間; Fourth Dimension)