Playing Ninjutsu in Jujutsu Kaisen

"Okay," Natsu Hiraku said, handing the watermelon to Toge Inumaki. "Thanks, Toge. Please clean it up and cut it into eight pieces."

"Bonito flakes."

Toge Inumaki took the watermelon with one hand and tucked the scarf covering his mouth into his neck. Holding the watermelon with both hands, he said, "Make the surface of the watermelon clean."

"Whoosh—"

The saliva on the watermelon's rind instantly vanished.

He continued, "Cut the watermelon into eight pieces."

The watermelon in his hands didn't move, but everyone who was used to it already picked up their portions.

Natsu Hiraku, returning after washing his hands, took two slices and handed one to his own Asura.

"Cursed Speech, huh... what an interesting class."

Kento Nanami looked at the watermelon in his hand, thinking it wasn't good to always be treated by the juniors. He said, "How about we go out to eat today? I know a restaurant with delicious food. As your senior, I'll treat."

"There's no need for that."

Panda chimed in, "Why don't you seniors come over tonight and try Hiraku-kun's cooking? He's a great cook, at least better than 95% of restaurants out there, and it's safe to eat."

Yuta Okkotsu added, "Yeah, and Hiraku-kun is about to go grocery shopping soon. Why don't you seniors come over tonight and join us for dinner?"

Hearing the juniors' invitations, Kento Nanami and Kirara Hoshi became interested.

Natsu Hiraku, feeling quite generous at the moment, puffed up with pride when he heard them praise his cooking. He patted his chest and guaranteed, "Tonight, I'll take care of the stomachs of our two esteemed guests. I promise the food will be delicious."

After all, he hadn't spent much of the ten million he earned before, and the school had also given him a salary, around three hundred thousand (author's estimate).

While he couldn't afford ridiculously expensive Cursed Tools, it was more than enough to buy ingredients.

Cursed Tools, like Sorcerers, had their good and bad. He wasn't going to forge them anyway. If he really wanted to understand them, it would be after he reached Special Grade.

The most important thing now was preparation for the battle against Kyoto Jujutsu High in four days. There wasn't much to change in the training for these few days; it would likely involve more tactical discussions.

Although there was a sure win scenario, which was to let Yuta Okkotsu go berserk, it felt a bit off to think that way. After all, being strong oneself was true strength. They could worry about other things if they couldn't win...

He took out his phone from his pocket and checked it, realizing it was already two o'clock. It was time to go grocery shopping. He gently patted Asura's head to signal it was time to leave, then said to everyone, "I'm going to buy groceries, so I'll be heading off now."

After saying goodbye to everyone, he left school directly. Looking at the lush trees along the road, perhaps inspired by the scenery, he couldn't help but sigh, "Ah~! Living is so tiring, but I don't want to die. I studied medicine diligently before I transmigrated, and now I'm training every day. The only peaceful days were probably those few days I was unconscious."

"I really wish I could be unconscious for another... ah, never mind. I don't get any benefits that way. It's much more satisfying to complete missions and get rewards."

After sighing, Natsu Hiraku opened his System panel to take a look.

[Host: Natsu Hiraku]
[Cursed Energy: 850, Quasi-Grade 2 Sorcerer]
[Stamina: 20]
[Dojutsu: One-Tomoe Sharingan]
[Ninjutsu: Fire Style: Great Fire Annihilation, Fire Style: Great Fireball Technique, Summoning Technique, Substitution Technique.]
[Taijutsu: Self-Defense Techniques, Military Fist, Sanda, Jeet Kune Do, Maki's Saber Technique (Renameable).]

"Quasi-Grade 2 Sorcerer..."

Natsu Hiraku mumbled, looking at the panel. He didn't usually like looking at this thing; sometimes, a month would pass before he checked it, as there was no point in looking when his points were zero.

Wasn't he already anxious enough?

His body had been trained enough, and there was nothing surprising. Anyway, he felt it was all within his expectations. With his life-risking training method, even a skinny waste of space could rise to power.

As for Maki's Saber Technique, it could probably be understood as having learned Maki's self-created saber technique...

Forget it, it didn't sound good to say it out loud. He should rename it.

"Let's call it... February Sky Saber Technique, since I've been learning it for over two months."

Natsu Hiraku nodded with satisfaction as he looked at the renamed technique. He wasn't sure if the name was explosive, but he personally thought it had a good meaning.

Perhaps in the future, every time he saw this name, he would recall his painful experiences and remind himself not to be arrogant. It was also like not forgetting this black history, warning himself that he must get revenge in the future.

Regardless of which, Natsu Hiraku felt it was quite meaningful.

He clicked on the page selling Ninjutsu.

Natsu Hiraku pondered for a moment and decided to look at the Rasengan Ninjutsu. After all, hand seals were really annoying. In war, who had time for hand seals? The later stages of Naruto were also ridiculous; they completed hand seals with just a clap.

After searching for a long time.

Natsu Hiraku clicked on the introduction for Rasengan.

[Rasengan: 200 points. Consumes 200 Cursed Energy.]
[Rasengan: Formed by highly rotating and compressed Cursed Energy, it will crush anything it touches, easily breaking through iron plates. It will explode upon contact. No hand seals required. Consumes 200 Cursed Energy, no upper limit.]

"Highly rotating and compressed Cursed Energy..."

Natsu Hiraku looked at his right hand, a feeling of "I can do it too" arising in his heart. He now had enough Cursed Energy to squander, no longer the weakling who was drained after casually using a Ninjutsu.

The words "Opening Cursed Technique" appeared in his mind.

"I don't know if it's feasible, but let's try it. Asura, stand still for a moment, I'm going to try something."

"Mew~ (What is Master planning now?)"

Asura, walking at the very front, sat down and turned to look at his master curiously.

Natsu Hiraku lowered his head and stared at his right hand. As the Sharingan appeared, his right hand was engulfed in scarlet Cursed Energy.

Looking at the Cursed Energy burning like flames on his hand, Natsu Hiraku took a deep breath and slowly closed his eyes. At this moment, he needed to achieve a state of mental tranquility; a Cursed Technique couldn't be researched with mere passion.

Theoretically, he could use this Ninjutsu right now without the System.

As his excited heart gradually calmed down, Natsu Hiraku slowly opened his eyes, exhaled the breath he held in his chest, and looked at his palm with his scarlet pupils, lost in thought.

Cursed Energy began to converge into his palm. Natsu Hiraku only stopped gathering it when it reached the size of a basketball.

Looking at the Cursed Energy ball in his hand, which was the size of a water droplet, Natsu Hiraku knew it was time for the next step: shaping this initial form of Cursed Energy into whatever he desired.

"Make the Cursed Energy ball rotate rapidly and compress towards the center point."

After silently reciting this in his mind, the Cursed Energy ball in his hand began to rotate to the right. The initial rotation proceeded without any issues, under the precise control of the Sharingan.

However, as the Cursed Energy ball spun faster and faster, the once-complete sphere broke apart into strands of Cursed Energy. It expanded to at least twice its original basketball size.

Although it looked harmless, it was already quite similar to the Rasengan he remembered, except his was red.

Seeing that the rotation speed of the Cursed Energy ball had not yet reached its peak, Natsu Hiraku took a deep breath and silently recited, "Time to speed up and compress."

The Cursed Energy ball in his hand spun faster and faster. Under Natsu Hiraku's intentional compression, its size also decreased. Perhaps it was compressed too much, and several nearby strands of Cursed Energy fused into sharp Cursed Energy blades.

Natsu Hiraku did not stop this change; he simply watched it, observing and recording it, much like a clinical trial.

Perhaps the final result would be a Cursed Technique completely different from the Rasengan, but for now, he was just accumulating experience.

With this thought in mind, Natsu Hiraku continued to accelerate and compress the "Rasengan" in his hand. The small Cursed Energy blades did not merge at this point but made a "clang, clang, clang" sound as they collided.

Natsu Hiraku also realized something was wrong. The tomoe in his scarlet pupils were spinning rapidly. Some of the colliding Cursed Energy blades were directly flung out, creating a cut on his face. Perhaps because the opening was too small, it didn't bleed.

"This is bad. I need to adjust the spacing between these Cursed Energy blades, or if they explode, I'm done for."

Although he was calmly complaining internally, Natsu Hiraku had no solution at the moment. This data test had gone too far. He knew that getting nervous was useless and might even lead to a loss of control.

If this thing in his hand exploded, within a radius of ten meters would be devastated in an instant. He certainly didn't have that kind of speed to escape. As for recalling the Cursed Energy...

That was no longer an option. The Cursed Energy blades had been compressed into a solid form, and due to the high-speed rotation, they could no longer be recalled. As for slowing down, he'd probably be shot full of holes before he could even do that.

Honestly, it already felt like the "Stormy Pear Blossom Needles" technique. And his version was even more awesome: 360-degree projection, ten-meter range, and the potential to backfire if not controlled properly.

"Hoo~"

Natsu Hiraku parted his lips and exhaled a mouthful of turbid air. He looked at the "spiky ball" in his hand, which could kill him at any moment, his gaze gradually turning cold. At this moment, he had to treat the "spiky ball" in his hand like a patient.

Calmness and composure were the most crucial qualities for a doctor.

His left hand was enveloped in Cursed Energy, and he held the "spiky ball" with both hands. Under the precise control of the Sharingan, he began to make adjustments. The Cursed Energy blades, which had changed their trajectory due to collisions, were gently shifted by Natsu Hiraku to other areas.

The "spiky ball" in his hand was now only the size of a billiard ball, but there were thousands of Cursed Energy blades, densely packed. What Natsu Hiraku had to do now was to find trajectories for these thousands of Cursed Energy blades that lacked fixed paths.

Amidst the chaotic collisions, a few Cursed Energy blades would occasionally be flung out, some directly embedding themselves into the ground. His hands holding the "spiky ball" were also directly pierced.

Perhaps because the piercing speed was too fast, Natsu Hiraku didn't feel much. He only noticed that the Cursed Energy covering his hands had been forcefully broken through by something.

He knew these were Cursed Energy blades that had been ejected due to collisions.

Natsu Hiraku swallowed, cold sweat beading on his forehead, urging himself to hurry.

Blood began to seep from his pierced palms, dripping onto the ground. Asura, who had been sitting and waiting nearby, saw his master's hand bleeding and his pupils contracted. Thinking his master had been ambushed, his gaze turned fierce, and he started to get up.

Natsu Hiraku shouted loudly, "Stupid dog, stay put and don't move!"

This reprimand made Asura sit back down, looking wronged as he lay on the ground.

As the seconds ticked by, Natsu Hiraku's arms, fingers, chest, cheeks, and even his neck sustained injuries of varying degrees. The Sharingan was also starting to become overloaded, and warm liquid flowed from the corners of his eyes, streaking down his cheeks.

"I wonder if my eyes will go blind..."

Natsu Hiraku muttered softly, as if reminding himself that now was not the time to feel tired. Although his vision was already blurry, his tone remained calm:

"If they go blind, they go blind. It's not so bad."

"Yeah... it's not so bad..."

By the end, even Natsu Hiraku himself didn't know what nonsense he was spouting. Those words were spoken subconsciously.

A moment later.

Natsu Hiraku closed his eyes, feeling the now-stable "spiky ball" in his hand. He sighed and said, "I'm exhausted. I almost messed up. My eyes are bleeding too much; I don't know if I can open them later. But... what should I name this move?"

Natsu Hiraku played with the ball in his hand. The Cursed Energy blades inside had already been assigned trajectories by him. Unless an external force acted upon it, this thing was quite safe.

Although the process was perilous, at least the outcome was good. There was just a slight drawback: what would happen if he was interrupted by a sneak attack right after he condensed it?

A mutual destruction?

He felt it would be safer to add another layer of Cursed Energy protection around this thing, to avoid a last-resort one-for-one exchange with the enemy if he didn't handle it well. Of course, this layer was just to guard against external Cursed Technique attacks.

As for naming it... he'd think about it after he finished improving it.

Natsu Hiraku plopped down on the ground, weakly complaining:

"Ah, I'm so tired. I'm never doing this again."

Natsu Hiraku threw the now-stable "thorn ball" in his hand forcefully. It wasn't a random throw; the surrounding terrain was already imprinted in Natsu Hiraku's mind.

The end of the path ahead was a small hillside, and even if the "thorn ball" hit it, it wouldn't explode. It would only leave the hillside a mess.

"Asura, send me home. I think it's better to rest before going out to buy groceries."

Asura didn't come over when Natsu Hiraku called out. Instead, he howled in complaint, "Woof woof! (Master, you called me a stupid dog?)"

Natsu Hiraku chuckled upon hearing this and said, "How could I? I only said that for your own good, I had no choice. Your dad is blind now, aren't you going to send me back?"

After speaking, he waved his hand. In less than a moment, he felt the fur in his hand. He fumbled around, sat on him, and said, "Thank you, Asura, you're the best."

Asura didn't respond to his master's praise. Instead, he raised his head proudly.

Natsu Hiraku felt the joy in Asura's mind and smiled, patting his head.

Perhaps... he was truly experiencing the hardships of being a parent. For some reason, a thought suddenly crossed his mind to go back and see.

Not back to his original world, but to see the parents who had died here. Although he hadn't felt much on the day of his transmigration, as time passed and the memories of the original host truly became "his own," he would feel something.

"Never mind, I'll go see Grandma after the exchange event. If my eyes are fine today, I'll go clean up their graves. It's been a few months since I last visited."

As soon as he finished speaking, Asura beneath him reminded him:

"Woof! (We're home!)"

"Okay, I know."

Natsu Hiraku got off and touched the doorknob with his left hand, then opened it and walked in. He usually didn't lock the door when he went out, as there was no one he needed to guard against. His home was also bare, with nothing except some food in the refrigerator.

He usually only deadbolted the door when he was home, as he preferred to sleep without any clothes on.