Space-Time Ninjutsu

Space–Time Ninjutsu (時空間忍術, Jikūkan Ninjutsu, English TV: "Teleportation Ninjutsu" or "Transportation Techniques", literally meaning: Space–Time Ninja Techniques) 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. Tobirama Senju, Minato Namikaze and Obito Uchiha are all notably skilled users of space–time ninjutsu for example. Space-time techniques are not common, as Shikamaru noted its rarity.
All summoning-based techniques are space–time 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 skilled user can synchronise their respective dimension with another to gain access to it — a feat which requires an enormous amount of chakra; directly proportional to the distance between the 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, Black Zetsu noted that repeated use would take a toll on her chakra reserves.