Re: "that jutsu" naruto was suppose to learn.
it is minatos flying thunder god jutsu
Originally Posted by db3st
heres the explanation on narutopedia
This jutsu was created by Minato Namikaze, and quite possibly the reason behind his nickname, "Konoha's Yellow Flash" (木ノ葉の黄色い閃光, Konoha no Kīroi Senkō). It allows the user to move himself to another location in the blink of an eye. Although it is often compared with the Body Flicker Technique, the speed and range of this jutsu are much greater. In principle, this jutsu is similar to the Reverse Summoning Technique, as it revolves around manipulation of time and space rather than accelerated movement, but instead of bringing something to users, it sends them somewhere. Additionally, it makes no noise and produces no puff of smoke, allowing the user to appear behind someone unnoticed.
The seal appearing on the opponent after being marked by Minato.To activate this jutsu, the user needs a special seal or "technique formula" (術式, jutsu-shiki) to mark the destination. After this is done, the user enters a dimensional void that almost instantaneously transports himself to the location of the seal. Minato applied the formula in advance to weapons such as kunai. By giving one such kunai to a person, he can immediately teleport to that person at any time. He can also apply the mark to a touched area, such as his opponent or some other surrounding feature. Minato also incorporated the formula into his wife's seal, allowing him to come to her aid at all times.