Playing Ninjutsu in Jujutsu Kaisen!

"Clang!"

A crisp sound rang out as the naginata, originally aimed at Natsu Hiraku, was deflected. It sliced past him and embedded itself firmly in the ground.

But Maki Zenin, who wielded the weapon, paid it no mind. She released the hilt with both hands and unleashed a barrage of punches at Natsu Hiraku. After forcing him back, she pulled the naginata from the ground and continued her relentless assault.

As a master of cursed tools, she was proficient with various weapons and naturally adept at switching combat styles. In the past, Natsu Hiraku had been completely outmatched by her.

Once his eyes grew accustomed to her movements, she would change her tactics, leaving him unable to react. Gradually, he would be overwhelmed until he was forced to close those eyes.

And then, there would be nothing left. Without those special eyes, he would be utterly crushed.

After all, not everyone was like her; she had been forced to train her martial arts from a young age. She could afford countless mistakes, but he could only afford one!

Within a few exchanges.

Natsu Hiraku was already struggling to keep up. It was indeed a bit of a stretch to have a mage engage in close-quarters combat.

But times had changed. When Natsu Hiraku found an opening, he no longer retreated. The Sharingan in his pupils turned an even deeper crimson, directly confronting Maki Zenin's gaze and creating a brief illusionary pause.

(The author checked the information; illusions can be used, but they are not strong.)

Maki Zenin's hand, poised to strike, froze. Her consciousness detached from her body and entered a dark space. Just as she reacted and tried to break free from this darkness.

Natsu Hiraku had already subdued her. Looking at the now-conscious Maki Zenin, he asked with a smile, "I won."

Maki Zenin saw that the naginata, which had been in her hand, was now in Natsu Hiraku's. She said helplessly, "I lost. What was that just now?"

"Cursed Technique."

Natsu Hiraku smiled slightly, not elaborating. After returning the naginata, he waved to Toge Inumaki and said, "Toge, let's go eat. They'll probably be sleeping for a while longer!"

"Salmon."

Toge Inumaki got up and walked towards Natsu Hiraku. Even as an observer, he found it confusing. Maki's hands, which were about to raise the naginata, suddenly stopped. Then Natsu Hiraku effortlessly took the naginata from Maki's grasp and counter-attacked.

He had never seen him use it before. Had his eyes evolved, allowing him to learn a new Cursed Technique?

Maki Zenin looked at the naginata in her hand, still somewhat bewildered. She seemed to be replaying what had just happened. She had only glanced at him... a single glance!

Natsu Hiraku called out, "Maki, let's go eat."

"Mm, okay."

Maki, having seemingly found a weakness in Natsu Hiraku's technique, didn't ask further. Instead, she planned to try it out during their next sparring session.

Natsu Hiraku couldn't be happier. It had been over two months, and this was the first time he had defeated Maki. Although it was only once, perhaps there would be a second, a third time... in the future.

Moreover, his strength had finally caught up with the main group. 1000 Cursed Energy was enough for him to develop his Cursed Technique. Ninjutsu was good, but it was a bit difficult to draw.

He had also figured out the System's patterns. As he received more quests, the points and Cursed Energy obtained from the quests would also increase.

Perhaps in the near future, he could exchange for some incredibly powerful items, but not now.

The three of them had a simple meal at the cafeteria and then left. Natsu Hiraku said he "had something to do" and left alone. He wanted to use these few days to complete the Cursed Technique that had almost killed him before.

The operating trajectory of the Cursed Energy blade was already etched in his mind. Strangely, just completing the principle of the Cursed Technique once had imprinted it in his mind as his own unique Cursed Technique.

But this Cursed Technique was indeed difficult to complete. His One-Tomoe Sharingan had almost gone blind before he could barely finish it. It also involved an element of luck; if even a few of the Cursed Energy blades had deviated slightly, he would have been dead.

The most crucial core was ready. Now, all that was needed was to wrap an outer layer of protection to prevent other Cursed Techniques from attacking. That is, to prevent a surprise attack during the construction process that would cause premature explosion, something he had also thought of yesterday.

This could only be used as a ranged Cursed Technique, completely different from the Rasengan. That thing could even be used at point-blank range. Although this was made based on that principle, if used at point-blank range, it would turn the user into a sieve.

Whether it was an enemy or himself.

Arriving at the forest where he often trained, Natsu Hiraku raised his right hand and began to deploy the Cursed Technique. Unlike before, this time, a protective shell was added around the "core."

The two expanded and compressed simultaneously. This way, upon the completion of the Cursed Technique, an external protective shell would form. Then, he could add something interesting to the core, such as an exploding Cursed Energy core.

As long as this thing was placed in the very center, it would become a remotely controlled bomb!

Theoretically, this thing wasn't that difficult. Of course, there was also the possibility of it exploding and turning him into a sieve, as risk and creation went hand in hand.

As the Cursed Technique in his right hand began to spin, Natsu Hiraku activated his Sharingan to observe the exploding core forming within. Because the Cursed Technique was constantly rotating at high speed, the exploding core could only be formed into a sphere.

Everything progressed smoothly: the formation of the core, the compression of the protective membrane, and the most troublesome part, the exploding core. The exploding core within was condensing. Due to occupying the central point, it wouldn't shift to other positions, and Natsu Hiraku didn't dare let it move around.

He even considered adding another protective layer outside the exploding core, but due to Cursed Energy consumption, Natsu Hiraku didn't do it.

If he continued, the Cursed Energy required to construct this one Cursed Technique from start to finish would reach 200, which was unfeasible. Calculating it this way to deal with others was probably unique to him.

Natsu Hiraku dropped the "glass ball" in his hand onto the ground. Thanks to the protective membrane, this thing didn't explode on contact. He retreated tens of meters away to test its power.

He gently raised his right hand, his middle finger and thumb touching lightly. Then, with a "snap," the guaranteed core in the center of the originally stable "glass ball" exploded. However, in terms of intensity, it couldn't even kill a frog, but it caused the operating trajectory of the Cursed Energy blades to go completely haywire.

"Crackle—"

The sound of shattering glass echoed, followed by Cursed Energy blades shooting out in all directions. The closest trees were riddled with holes and then snapped, but they didn't fall, leaning instead against other nearby trees.

From the snap of his fingers to the scattering of the Cursed Energy blades took less than 0.2 seconds. An indiscriminate attack range of ten meters. Generally, no one could escape.

Looking at the ravaged trees, Natsu Hiraku smiled with satisfaction and muttered to himself, "In terms of destructive power, this move is probably stronger than the Rasengan. If I were to name it, would it be Scattering Rasengan? Or Spiral Scatter Glass Beads?"

Natsu Hiraku seemed unaware that he was bad at naming things and was enjoying himself.

Looking at the devastated trees, Natsu Hiraku clapped his hands and left directly. The exchange event with Kyoto was approaching, and he wanted to do something interesting.

As soon as he left the forest, his phone rang. He took it out and saw it was a call from Teacher Gojo. Natsu Hiraku was a bit confused. He had been that drunk yesterday, yet he was up so early?

"Single-handed Thomas spin!"

Connecting the call, he asked, "Teacher Gojo, is something wrong?"

"Come to the classroom, Hiraku. I'm going to teach you something useful today. I originally wanted to wait a few more days, but since you're about to go to war with Kyoto, I'll teach you early! How about that, moved? Then that's it, hurry up and come over!"

Without waiting for Natsu Hiraku to say anything, Gojo Satoru hung up the phone.

"..."

Natsu Hiraku looked at his black-screened phone and fell silent. For some reason, even though he was going to teach him, he couldn't feel happy at the moment.

Arriving at the classroom door, he found no one inside except Teacher Gojo standing at the podium. He asked, "Where are Maki and the others?"

"They have their own things to do."

Gojo Satoru waved for Natsu Hiraku to come in and said, "Everyone needs to be taught different things, so I didn't call them. As a teacher, I am very responsible."

"I see."

Natsu Hiraku muttered softly and sat down in his seat. Looking at Gojo Satoru on the stage, he curiously asked, "What are you going to teach me, Teacher Gojo?"

"Hmph."

Gojo Satoru smiled, picked up a piece of chalk, and wrote a few large characters on the blackboard: [Reverse Cursed Technique]. He said, "I happened to see your sparring with Maki this morning. Considering the special nature of your eyes, I want to try teaching you the Reverse Cursed Technique."

"Reverse Cursed Technique?"

Natsu Hiraku was a little confused at the moment. He seemed to have heard the term before, but he couldn't remember it. He hadn't read this manga in a long time, and it was already a miracle that he could remember some of the plot and charismatic characters.

Take Gojo Satoru, for example. Natsu Hiraku remembered that he was very strong, the ceiling of combat power, and very flamboyant... Megumi Fushiguro, the close-combat summoner. Yuta Okkotsu, the pure love warrior, and so on...

"Yes, I'll explain the principle first, then we'll do a practical demonstration."

Gojo Satoru turned around, holding the chalk in his right hand, and continued to write some incomprehensible things on the blackboard.

Things like negative multiplied by negative equals positive, the precision of Cursed Energy control, and so on...

After finishing writing, Gojo Satoru picked up a bamboo stick from the table and tapped on [Negative Multiplied by Negative Equals Positive], saying, "The so-called Reverse Cursed Technique is to multiply the negative of Cursed Energy by itself, which is the so-called negative multiplied by negative equals positive."

"You can also understand it as Cursed Energy originating from one's own negative emotions. We Sorcerers do not produce Curses, but rather transform this negative emotion into power, so the energy of Cursed Energy is negative."

"Most Sorcerers' Techniques are innate Techniques, which are imprints of Techniques in the brain. For example, if you need to form hand seals to cast a Technique, this type belongs to the most basic Forward Cursed Technique."

"Ah! I'm getting off track. Never mind, I have to learn it anyway. As mentioned before, Cursed Energy is a negative force that can strengthen the body but cannot regenerate it. Therefore, you need to multiply the same negative force by itself, negative multiplied by negative equals positive, and this is the Reverse Cursed Technique. The principle is roughly like this, I'll demonstrate it practically."

As Gojo Satoru spoke, he took out a revolver from his pocket and, in Natsu Hiraku's confused eyes, decisively aimed it at himself and fired!

"Bang!"

The gunshot startled Natsu Hiraku, and he instinctively closed his eyes.

"Oops, I forgot to turn off my Limitless Cursed Technique. It seems I'm still a little afraid of having my head blown off by a gun."

Gojo Satoru's calm voice made Natsu Hiraku open his eyes. Looking at the bullet embedded in the outer layer of his forehead, he was speechless and cursed inwardly, "Is it fun to scare a student's fragile heart?"

As if sensing Natsu Hiraku's complaint, Gojo Satoru put down the revolver, took out a fruit knife from his pocket, and smiled, "This time it's for real. That was just a joke."

After speaking, he drew the fruit knife and stabbed it into his own arm. It pierced through as if his arm wasn't his own, and red blood flowed from the wound.

When Gojo Satoru pulled out the fruit knife, the wound healed rapidly, leaving no scar behind, except for the bloodstains on his arm.

Natsu Hiraku's eyes widened as he watched. If he could learn this, wouldn't he be able to heal the scars on those women and achieve his dream of making money while lying down before crossing over!

"Hiss..."

Natsu Hiraku slammed the table and stood up, shouting, "This is awesome, I want to learn, I want to learn!"

As if he knew Natsu Hiraku would react this way, Gojo Satoru sneered, stuck the fruit knife he was holding into the table, and picked up the bamboo stick to tap on [Precision of Cursed Energy Control], saying:

"The prerequisite for learning is to have extremely precise control over your own Cursed Energy. What I'm going to teach you today is this!"

With that, Gojo Satoru snapped his fingers lightly, and a faint wave of Cursed Energy spread out. As if deliberately controlled, the closed window slowly opened, and the open door slowly closed, without a sound.

Although it looked simple, Natsu Hiraku had already activated his Two-Tomoe Sharingan to observe the moment the Cursed Energy approached. Teacher Gojo's Cursed Energy was very precise. The moment the door closed, the Cursed Energy responsible for pushing the door dissipated, and if it were any less, it wouldn't be able to push it, and if it were any more, the wooden door would make a collision sound.

Gojo Satoru continued, "If you can practice to this level within a morning, we will proceed to the next step."

"Uh... I don't think I need to, Teacher Gojo. This kind of detailed Cursed Energy control is already very simple for me right now."

Natsu Hiraku said and confidently demonstrated his new move, "Rasengan Barrage Glass Beads." He opened his right hand, and a scarlet Cursed Energy sphere appeared. In less than a second, the Cursed Energy sphere turned into a red glass bead.

Gojo Satoru was stunned. He looked at the Cursed Energy blades rotating at high speed within the glass ball, as if recalling something. The small hill at the corner of the intersection yesterday seemed to have been devastated by this thing.

He had to admit, it was quite impressive. He had even gotten out of the car to take a look at the time. He estimated with his Cursed Energy that the depth of penetration was at least three to four meters.

Gojo Satoru said with some interest, "Show me. Make it explode directly, and I'll see how powerful it is."

"Uh... Teacher Gojo, are you saying you want this thing to explode in your hand?" Natsu Hiraku wiped the sweat that suddenly appeared on his forehead and asked uncertainly.

After all, what normal person would do that.

"Yes."

After receiving Gojo Satoru's affirmation, Natsu Hiraku slowly handed the ball in his hand over. Although the bullets earlier couldn't harm him, his own thing...

Close-range output was definitely more powerful than revolver bullets! Not to mention thousands of Cursed Energy blades, which would dissipate on their own after flying a certain distance.

He leaped out of the open window, ran dozens of meters away, and shouted to Gojo Satoru inside the classroom, "Teacher Gojo, I'm going to detonate it, be careful!"

"No problem, no problem, I... I'm the strongest."

Gojo Satoru carefully examined the glass ball in his hand. The rotation track of the cursed energy blade inside was already fixed. Creating this required extremely high precision in controlling cursed energy.

Interesting. It looks like he'll learn the Reverse Cursed Technique quickly. I just wonder if he's actually smart.

With a snap of his fingers, Gojo Satoru instantly activated his [Limitless Cursed Technique]. The glass ball in his hand was repelled as if by something, squeezed out, and then a "crack" sound echoed in front of him.

The outer shell covering those cursed energy blades shattered and then exploded outwards.

"Whoosh whoosh whoosh..."

"Thump thump thump..."

The entire classroom was now riddled with holes. As a gust of wind blew past, the room... collapsed!!

"Clang!!!"

A wooden stick rolled to Natsu Hiraku's leg.

Natsu Hiraku looked at the collapsing building, swallowed, and thought to himself, I never expected to do something I never did in my past life: blow up the classroom.

"Cough, cough, cough!"

Gojo Satoru pushed away the wood pressing down on him and said, "This thing is quite powerful. Now the Principal will dock my salary again."

"Are you okay, Teacher Gojo?" Natsu Hiraku walked forward and asked.