Rank: S (Forbidden Rank)
Range: Short – Long
Chakra Cost: 40 (70)
Damage points: N/A (-20 per use)
Description: Kamui is a set of abilities born in Obito Uchiha's eyes. Differentiating from normal MS techniques, some of Kamui's abilities are accessible to Obito without having to activate his MS and using only his Right 3 Tomoe Sharingan as is the case of his (Isō Idō no Jutsu) - Phasing Migration Technique. A Ninjutsu technique which uses the Mangekyou Sharingan eye to link this reality to an unknown alternate dimension is the key ability of both the Right and Left MS eyes of Obito Uchiha. While his right eye has the ability to absorb and teleport things into that dimension (even Obito himself) by proximity and acting as a portal itself (that draws things to it, much like a miniature black hole), the left eye creates the same type of portal but on focal point, much like the workings of Amaterasu (albeit somewhat slower acting). At a given point in his early life, Obito gave his left eye to Hatake Kakashi. In this way, while Obito retained the self-teleportation abilities of his right eye, Kakashi was bestowed with the ranged version of those abilities in his left eye. While Obito showed the ability to activate his right eye's abilities without having to activate his MS, Kakashi always needed to activate his MS to use Kamui. The main difference is that once Obito activates his MS, the speed at which he can absorb something or himself drastically increases as well as the size of what he can absorb and the pull of the "portal" itself, making it coming into close range of him quite dangerous, while his normal use of the technique takes a couple of seconds to fully absorb something and can never target things bigger than himself. This form of telportation can be used to travel in the normal world in a virtually instant manner. The user will teleport himself to the alternate dimension and then teleport back into the normal world in another location. Another difference initially noted was that is that while Kakashi could send something into said dimension through his use of Kamui, he could not retrieve it, something that Obito is capable off and has mastered to a great extent, proving capable of even adding great momentum and speed to the objects he retrieves, using them as projectiles to attack. However, after his fight with Obito, Kakashi eventually learned how to teleport himself in and out of the same dimension. This ability however, puts a great toal on him and he can only do it a very limited number of times during which he can only teleport himself.
Note: Obito needs to be tangible to use his absorption abilities and he can use them 6 times per battle. If used with MS active, it reduces the duration of MS by one turn.
Note: Kakashi can use it up to 3 times, requiring him to have his MS active and reducing its duration by 2 turns per use, while severely draining his chakra and damaging his body (only 2 times be it for ranged or self teleportation means), making it a forbidden rank technique.
Note: If an opponent with no means to return to the normal world is sent to the alternate dimension, he cannot return unless the user brings him back. Only Kakashi and Obito bios can travel between the dimension and the normal world.
Note: Right eye version can only be used by Obito Uchiha bios and Left eye version can only be used by Kakashi Hatake bios.