Uchiha Cheng was thrilled that he had learned the Three Body Technique with ease. He hadn't expected learning ninjutsu to be so simple. All he had to do was form the Hand Seals in order and circulate his chakra to release the jutsu effortlessly.
Seeing that Uchiha Cheng was getting a little carried away, Mika hurried to remind him,
"A-Cheng, learning ninjutsu is never something you can accomplish overnight. You can use the jutsu now, but when it comes to how completely you perform them, how quickly you can release them, and how proficient you are, you still have a long way to go. Remember, there's always more to learn!"
Uchiha Cheng understood the warning in his mother's words. As an adult in his previous life, he naturally recognized that she meant well.
"Mom, I understand all that. I'll keep practicing these jutsu. But look how quickly I learned them—doesn't that mean I can learn a new jutsu now?"
Uchiha Mika pondered for a moment. Originally, she had only planned to teach Uchiha Cheng how to refine chakra. She hadn't expected him to learn so much faster than most people, so she'd had to bring out the Three Body Technique, which she hadn't intended to teach him yet. But even that wasn't enough for him.
In that case...
"There is one more jutsu that's suitable for you to learn now. If you can learn this one quickly too, I'll let you choose a jutsu you like and study it."
Uchiha Cheng was overjoyed.
"What jutsu is it?"
"Next, I'm going to teach you the—Body Flicker Technique."
"The Body Flicker Technique? Isn't that a Space-Time Ninjutsu? Can I really learn something that difficult already?"
Mika helplessly ruffled her son's hair.
"You really come up with all sorts of strange ideas about ninjutsu, don't you? And somehow, they're all wrong."
Uchiha Cheng was at a loss for words. He'd based all his knowledge on the manga he'd read in his previous life and made his own guesses. If he'd gotten anything wrong, then Masashi Kishimoto was to blame.
Mika began explaining the theory behind the Body Flicker Technique and correcting some of Uchiha Cheng's misconceptions.
The Body Flicker Technique generally referred to a class of jutsu. Any jutsu capable of producing a Body Flicker effect counted, including Space-Time Ninjutsu that used the Body Flicker Technique.
But not all Body Flicker Techniques were Space-Time Ninjutsu. Space-Time variants were extremely difficult to learn and very rare; ordinary ninja hardly ever had a chance to encounter them.
The Body Flicker Technique ordinary ninja talked about was simply a D-rank jutsu. It involved gathering chakra in the soles of the feet and releasing it in a burst to achieve extremely high movement speed.
Because it relied on a burst of chakra to control both speed and direction, even the slightest variation could make a huge difference, so it was difficult to control precisely.
Skilled ninja could use extremely precise chakra control to move with incredible speed and accuracy, even rivaling Space-Time Ninjutsu.
Ordinary ninja, however, generally used the Body Flicker Technique just to get around. It was the jutsu that let them hop from tree to tree.
Normally, even a ninja who had completed cellular activation could only leap two or three meters high. With the Body Flicker Technique, though, they could easily jump over ten meters.
That was why the Body Flicker Technique was one of the jutsu that all students at the Ninja Academy had to learn. A ninja who had mastered it could cover a hundred meters in three or four seconds, run at speeds of over a hundred kilometers per hour, and use very little stamina.
"That's why, once they've learned the Body Flicker Technique, ninja can truly fight across national borders."
Uchiha Mika concluded.