Who are Naruto's best at developing Ninjutsu?

I think orochimaru successfully transformed the filth of the second generation Huo Ying, and even studied the art of immortality. At the end of the story, he even returned to his childhood, so it is estimated that he should have succeeded.

Wulun

Don't think that Woo people are usually stupid. In fact, every time he fought, he showed great wisdom. He even succeeded in opening the spiral shuriken, which is one of the most difficult endurance in the whole work.

Four generations of fire shadow

In addition to improving the second generation of flying Raytheon, the fourth generation of Huo Ying also developed spiral pills. If he hadn't died young, he should have been able to add spiral pills to natural changes.

Kakashi

Kakashi was able to prescribe the S-class Ninjutsu for thousands of birds when he was young, and even prescribed a new Ninjutsu called Lei Zi in hearsay novels.

The second generation of Huo Ying

There is no doubt that the second generation Huo Ying is the most powerful ninja developer in the whole work. He developed reincarnation, flying Raytheon and shadow avatar. In addition, he also invented many endurance techniques. In the first episode of banned books stolen by Woo people, all the banned books technologies were invented by the second generation Huo Ying.

Huo Ying of the first generation: Psychic skills can summon psychic beasts to help, but for such a powerful ninja of the first generation, psychic beasts are totally unnecessary, and summoning them may become a burden. Therefore, there was only one psychic skill in the first generation, that is, the five-fold Rashomon props psychic, and the attack trajectory of Kyubi no Youko bijuu Jade was changed by this trick between columns.

Huo Ying of the second generation: The second generation, like the first generation, has no psionic beast, but is more powerful than the psionic skill of the first generation. After all, it has the ability of metempsychosis, which can summon coffin legions, but this skill is forbidden. If the second generation wants, it can channel a bunch of coffins to attack.

Huo Ying of the Seventh Generation: Naruto's psychics were taught by Jiraiya, so psychics were naturally learned from Jiraiya, and they were all toads in Miaomushan. Judging from Naruto's appearance, they can basically channel all the toads in Miaomu Mountain, but Ji Ran is the most intimate one. After all, Ji Ran has completed the contract with Naruto since he was a child. In order to cooperate with Naruto, he is also a psychic with the deepest friendship. All the above are personal opinions.