Space–Time Ninjutsu

are techniques that allow the users to manipulate the space–time continuum.

Usage
By manipulating a specific point of space, the user can warp anything targeted into a dimensional void and teleport it to another location instantaneously. Minato Namikaze, Obito Uchiha and Tobirama Senju are notably skilled users of space–time ninjutsu.

All summoning-based techniques are space–time manipulation related, as they warp the targets through a dimensional void to the summoner's location.

Space–Time Ninjutsu allows one to bypass any Barrier Ninjutsu, as barriers only extend over the dimension they are placed upon, and similarly cannot prevent Space–Time Ninjutsu users from escaping to a dimensional void and then back outside of the barrier's confines.

It appears that each specific space-time technique has its own unique dimensional void that other techniques cannot normally access, however, a user can synchronise their respective dimension with the another to gain access to it. To achieve this feat, however, requires an enormous amount of chakra; directly proportional to the distance between dimensions. Obito for example, despite his ability to use Kamui countless times in a single day without noticeable effects on his chakra reserves struggled to open a portal to one of Kaguya's dimension for even a few seconds. While Kaguya's immense chakra reserves enabled her to connect her dimensions instantly, nonetheless, Black Zetsu noted repeated usage was starting to take a toll on her chakra reserves.

Dimensions

 * Kaguya's Dimensions
 * Kamui's Dimension
 * Pure Land

Trivia

 * In Naruto the Movie: Legend of the Stone of Gelel, Temujin summoned a distortion in space-time using his blood to activate the contract in the Sealing Room. However, the civilians of Temujin's Continent do not know what chakra and ninjutsu are, this remains debatable whether it can be counted as an actual ninjutsu.
 * Though summoning of ninja tools is commonly associated with the use of the Unsealing Technique, some shinobi have shown the ability to use space-time ninjutsu to summon objects.