Hiraishin in English means Flying Thunder God Technique, so meaning that it is linked to the Thunder God in the Japanese mythology. Like Amaterasu or Tukuyomi are Gods in the Japanese mythology.
My theory is that to master this jutus, you have to be chosen by the "Thunder God". The user basically enter into a contract with the Thunder God. Gods exist in the Narutoverse, there is the Shinigami (God Death) when Shiki Fujin is used.
Hiruzen, Kakashi, Danzo and Orochimaru are those who technically could learn a such jutsu.
Hiruzen was Tobirama's student, and Hiruzen had access to every jutsu data in the village, and he was known as the professor to knowing existence of every jutsu from Konoha.
Kakashi was Minato's student. And showed impressive feats in Ninjutsu, knowing many jutsu and able to copy them.
Danzo worked under Tobirama, and was very good in scealing techniques. ( Hiraishin implies scealing).
Orochimaru was a genius, and mastered so many complex jutsu.
But all of them, despite the fact they have the potential, they never mastered Hiraishin.
My theory is that Tobirama and Minato gather all the necessary conditions to be accepted by the Thunder God. The Thunder God which is the one giving the power to teleport. Among these conditions, there is the very good base level at Shunshin. You have to be naturally very good with the body flicker technique, it is basically a god gift.
The fact that Tobirama said Minato's body flicker technique surpass his , demonstrates how Tobirama's shunshin is already incredible so he is impressed to find one better than his.
Hiruzen, Kakashi, Danzo and Orochimaru aren't known for their body flicker technique.
So when Hiruzen saw how Minato natural speed is so fast, he immediately reminds him about his former master Tobirama, so he finally saw someone able to perpetuate Tobirama's legacy. In this way he gave him the Hiraishin scroll.
You can see that the Minato's guards are unable to truly use Hiraishin, they have to be as a group.
+ in the Anime, Tobirama's weapon is the Raijin no Ken, another reference about the Thunder God.
My theory is that to master this jutus, you have to be chosen by the "Thunder God". The user basically enter into a contract with the Thunder God. Gods exist in the Narutoverse, there is the Shinigami (God Death) when Shiki Fujin is used.
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Hiruzen, Kakashi, Danzo and Orochimaru are those who technically could learn a such jutsu.
Hiruzen was Tobirama's student, and Hiruzen had access to every jutsu data in the village, and he was known as the professor to knowing existence of every jutsu from Konoha.
Kakashi was Minato's student. And showed impressive feats in Ninjutsu, knowing many jutsu and able to copy them.
Danzo worked under Tobirama, and was very good in scealing techniques. ( Hiraishin implies scealing).
Orochimaru was a genius, and mastered so many complex jutsu.
But all of them, despite the fact they have the potential, they never mastered Hiraishin.
My theory is that Tobirama and Minato gather all the necessary conditions to be accepted by the Thunder God. The Thunder God which is the one giving the power to teleport. Among these conditions, there is the very good base level at Shunshin. You have to be naturally very good with the body flicker technique, it is basically a god gift.
The fact that Tobirama said Minato's body flicker technique surpass his , demonstrates how Tobirama's shunshin is already incredible so he is impressed to find one better than his.
You must be registered for see images
Hiruzen, Kakashi, Danzo and Orochimaru aren't known for their body flicker technique.
So when Hiruzen saw how Minato natural speed is so fast, he immediately reminds him about his former master Tobirama, so he finally saw someone able to perpetuate Tobirama's legacy. In this way he gave him the Hiraishin scroll.
You can see that the Minato's guards are unable to truly use Hiraishin, they have to be as a group.
+ in the Anime, Tobirama's weapon is the Raijin no Ken, another reference about the Thunder God.
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