Rasengan

Kangetsu shifted his left foot slightly, then rapidly formed hand seals and shouted, "Body Flicker Technique!"

There were three types of Body Flicker Technique: Space-Time Ninjutsu, Nintaijutsu, and elemental techniques!

Kangetsu naturally knew no Space-Time Ninjutsu, and he simply lacked the physique for Nintaijutsu. The elemental type, meanwhile, used various elemental techniques to achieve instantaneous movement by swapping places with matter, and it required hand seals.

The hand seals Kangetsu rapidly formed now were for an elemental technique!

Elemental Body Flicker Techniques included Sand Flicker, Water Flicker, and others!

The Substitution Technique was merely a stripped-down version of the Body Flicker Technique!

What Kangetsu used now was the Water Body Flicker Technique he had obtained from Hanzo the Salamander! This type of Body Flicker Technique required no particular chakra nature. All he needed to do was swap places with water near his opponent!

Kangetsu had already fixed his sights on a pool of blood beside that so-called Ishikura Kameda. Blood was water too!

And so, before Kameda's shocked eyes, Kangetsu appeared directly behind him!

At that moment, Kangetsu could still hear Kameda saying, "I'm invincible! No blade or spear can hurt me!"

But Kangetsu gave a disdainful smile, and in that instant, a mass of constantly spinning chakra appeared in his left hand!

If Naruto from the original story had come here at that moment, he would definitely have said, "How do you know the Rasengan too?"

That was right. This was the Rasengan! The very Rasengan that the Fourth Hokage had created especially for Naruto in the original story!

The Rasengan could be called the most practical jutsu in Naruto. Not only did it require no hand seals and pack considerable power, but it could also evolve further through the addition of a chakra nature!

And an even greater advantage of the Rasengan was how easy it was to learn! The most important part of mastering it was understanding how the move worked! After that came chakra control, the ability to use chakra, and a grasp of the battlefield!

Anyone who knew the principles behind the Rasengan could easily learn it during the Warring States Period! In that dangerous era, every drop of chakra was used with precision, without wasting the slightest bit, because even a trace of chakra could be what kept you alive!

That was why chakra control was something everyone excelled at during the Warring States Period!

With both the principles and the necessary chakra control, how far out of reach could the Rasengan be?

The Rasengan's weakness lay in landing the attack. It had tremendous power, but if it failed to hit the enemy, all that power was wasted!

When to use the Rasengan and how to land it in a single strike were matters that required thought! That part could only depend on the user's own mind!

Another weakness was its chakra requirement. A single Rasengan consumed twice as much chakra as an ordinary A-rank jutsu!

Now, Kangetsu formed a Rasengan directly in his palm! But he could only manage one, because his chakra reserves allowed him to use it just once. If he used it again, his powerful spiritual energy would drain his frail body into a dried-out husk!

But at that moment, under the astonished gazes of Inoue and the others, Kangetsu shouted coldly, "Rasengan!"