Playing Ninjutsu in Jujutsu Kaisen!

He inwardly complained, What did this guy eat to grow up? Is his body made of iron? So tough.

Master, your hands probably haven't broken an iron plate, have they...

Although protected by Cursed Energy, Natsu Hiraku himself was unharmed even when facing Ido Shuichi's heavy punches.

However, the floor behind him couldn't take it. It was like an iron plate, transferring the force of his master's blows directly to the marble floor beneath his back.

The sound of cracking could already be heard.

He felt that with this kind of strength, even a Grade 2 Cursed Spirit would be smashed into a pulp.

He forcefully used his legs, kicking Ido Shuichi in the abdomen and sending him flying. Then, he got up, took a stance, and charged forward, throwing a punch.

The strength is still this astonishing!

Ido Shuichi stabilized himself, grinned as he looked at the charging Natsu Hiraku, and met the punch head-on.

Two minutes later.

Ido Shuichi sat on a chair, panting heavily, and grumbled, "No more, no more! I'm never fighting you freak again. I had you pinned to the ground for three minutes. A normal person would be dead by now, but you're completely fine."

Natsu Hiraku sat beside him, rubbing his slightly numb arm, and thought speechlessly, Just from trading blows with you for these few minutes, I've lost two-thirds of my Cursed Energy. Cursed Spirits will have to detour around you from now on.

After a short rest, Ido Shuichi stood up and said, "Alright, let's start today's training."

"Okay."

Natsu Hiraku didn't dawdle. He put on the sunglasses from the table, activated his Sharingan, and prepared to copy again.

Ten minutes later.

As the door of the small cabin opened, a figure emerged. From his slender build, one could immediately recognize that this was Natsu Hiraku, who had finished copying the taijutsu.

Natsu Hiraku looked exhausted, his eyes bloodshot. That's right, he had almost overused his eyes again. He looked at the three big gold watches on his right arm and found that only half an hour had passed.

That meant it was 8:30.

Although it felt early, he was already very tired and had to go back to sleep.

Leaving the training cabin, he walked through the complex network of paths. Although people asked him for advice along the way, Natsu Hiraku refused them all, saying, "I'm too tired right now, we'll talk about it tomorrow."

As he got closer to the villa's entrance, Natsu Hiraku's tired expression turned serious. He looked up towards Mitsuchi Mi's room, where the curse aura that had been emanating before had now disappeared.

He could clearly feel that the Quasi Grade 1 Cursed Spirit seemed to be rampaging inside the villa at an extremely high speed, as if it were hunting for something.

The sudden change left Natsu Hiraku's mind blank, and then he shouted, "This is bad!" He pushed open the villa door and sprinted towards Mitsuchi Mi's room.

The two people standing at the door were bewildered. Seeing their Vice-Captain looking flustered, they felt like something was about to happen and quickly followed him.

Damn it, why did that Quasi Grade 1 Cursed Spirit leave Mitsuchi Mi's room? Could someone have assassinated her?

If that's the case, then I'm in trouble. I don't have any Cursed Energy left to deal with it.

But... how is that possible? Security here is so tight, how could anyone get in?

Could it be that other Cursed Spirits approached the villa in the half hour I was gone to fight for territory?

No, that's not right. If it were a powerful curse, I would have sensed it.

Regardless, I should go back to my room to get my Cursed Tool first, and then go check on Mitsuchi Mi's room.

Natsu Hiraku was extremely anxious. He rushed to the second floor, took out his key, and opened his room. Perhaps because of his haste, he missed the lock three times before finally inserting the key.

He opened the door, picked up the backpack by the wall, unzipped it, and took out the knife from the innermost pocket. He drew the blade, glanced at its sharp edge, took a deep breath, and burst out of the room, sprinting towards Mitsuchi Mi's room.

The road ahead was full of unknowns. If Mitsuchi Mi was really dead, then he could only run.

After all, he couldn't defeat a Quasi Grade 1 Cursed Spirit. All he could do was stall until all the ordinary people evacuated, and then he would retreat.

Clack, clack, clack...

Natsu Hiraku had already arrived at Mitsuchi Mi's door. He gripped the long sword in his right hand and slashed at the door. Instantly, the door was cut vertically, and Natsu Hiraku pushed it open.

Using the small amount of Cursed Energy remaining in his body, he activated his Sharingan and scanned the surroundings. The room was tidy, with no signs of an intruder. Mitsuchi Mi, lying on the bed, was breathing slightly, seemingly alive.

Natsu Hiraku's tense heart relaxed. He sighed softly and said, "You scared me to death. I thought something unexpected had happened. But... why was it running around the villa?"

As he was pondering, Mitsuchi Mi, who had been asleep, heard the movement and slowly opened her eyes, saying groggily, "What's wrong?"

"Uh... N-nothing, I... just came to see..."

Natsu Hiraku said with a troubled expression, slowly moving the sword behind his back to avoid scaring her.

Although he knew even a fool wouldn't believe him, especially since he had split the door open with a single slash, he could only brace himself and say it. Otherwise, he'd definitely be branded as someone who trespassed into a girl's dorm.

"Natsu Hiraku?"

Mitsuchi Mi heard the familiar voice and asked doubtfully. Then she got up and turned on the room light. She looked at the open door and wondered, "Is one side of this door shorter? How did you get in, Hiraku-otouto?"

"Uh..."

Natsu Hiraku no longer knew how to explain. A powerful surge of Cursed Energy was also approaching from the end of the corridor.

But Natsu Hiraku didn't move. He remained silent, unsure of how to speak. Mitsuchi Mi was alive, so there was only one explanation for the Quasi Grade 1 Cursed Spirit's behavior: it was hungry. And when it's hungry, it devours its own kind.

It could also be understood this way: Cursed Spirits are born from people's negative emotions, and they naturally grow stronger by feeding on them. Strengthening themselves is their instinct.

The only difference is whether they have reason or not. Ordinary Cursed Spirits, upon becoming powerful enough, will follow their instincts, destroying or killing everything around them, acting according to the original purpose of their birth.

For example, I'm so hungry, and in the end, I might devour everything, swallowing anyone I see.

Or perhaps more violent negative emotions, I'll kill you all. In the end, it will definitely cause mass panic, and I'll charge at anyone, no matter who it is.

You could also say that Cursed Spirits are pure beings, purely striving towards a single goal, no matter how small that goal may be...

A powerful negative emotion brushed past Natsuhi's feet. A ring was encased within his body, which felt as thin as gossamer. Natsuhi stood there blankly, his gaze fixed on the clean floor, unmoving.

"Huh? Where's my ring? I was definitely wearing it on my left hand when I slept."

Mitsuchi Mi said frantically, looking at her bare left hand. She then instinctively pushed aside her pillow and her panicked expression relaxed as she saw the ring underneath it.

She picked it up, put it on her left hand, and continued to scrutinize Natsuhi, who had suddenly barged in. "I didn't give you a key, how did you get in?"

"Uh..., well..., hehe, well..."

Natsuhi tried to cover his embarrassment with a smile as he spoke, covering his face with his left hand and saying hesitantly, "It was an accident, sis, believe me?"

"What accident?"

Mitsuchi Mi sat cross-legged on the bed, her left hand supporting her chin, watching Natsuhi with interest. She might have been a bit dazed earlier, but her mind was now completely clear.

The wooden board on the floor, the door that was cut short, the disturbance that woke her up, and... the knife behind Natsuhi.

Although she only saw a flash of silver-white, only a long sword could cut through the door so cleanly. Other things wouldn't be so easy to hide.

Even though she didn't know why he had broken down the door with a knife, she was sure he wouldn't hurt her.

"This..."

Natsuhi scratched his head, looking at the Cursed Spirit baring its teeth behind Mitsuchi Mi. After a moment of thought, he said, "It's not even 9 yet. How about we go out and enjoy the night view together, sis? You can wear the ring you have."

"You broke down my door just for that?"

Mitsuchi Mi obviously didn't believe him, but if he wouldn't say, there was no use in her pressing him. It was better to give him an out.

"Of... of course, it's to give you a surprise, sis. When we get back, you can sleep at my place, and I'll sleep on the street."

Natsuhi wasn't stupid either. He had often had to read people's expressions in the past and knew that the other person was giving him a way out.

Thinking about it brought tears to his eyes. The reason he initially chose to study medicine was to heal himself, to heal the heart that had been bullied by that scumbag. In order to get a meal, he learned to read people's expressions, trying to keep that person in a better mood so he would get hit less and fill his hungry stomach.

Therefore, compared to his peers, he knew better at this moment what would be beneficial to him and understood the importance of strength even more.

No matter how he did it, in the end, it was all for himself.

"Is that so..."

Mitsuchi Mi looked at the ring on her left hand, recalling what Natsuhi had said to her that morning. She got out of bed, put on her slippers, and said, "Alright, but if I lose my ring, I'll tear your mouth off."

"Okay, I'll keep a close eye on your ring the whole time, sis. I guarantee it won't get lost."

Natsuhi's lips curved into a smile as he said confidently.

"I really don't understand what you're so happy about. It's just going out. I'll go change, wait for me."

Mitsuchi Mi opened the cabinet next to the bed, picked out her shoes and clothes, and then walked towards the bathroom.

"Okay, sis."

"Click—"

The bathroom door closed. The Cursed Spirit that had followed Mitsuchi Mi out of the room now squeezed out from the gap in the door. Black mist slowly condensed, a pair of scarlet pupils stared intently at Natsuhi, and a sharp voice carried a hint of joy:

"Tha...nk you, I want... to go out and play with my daughter!"

As soon as he finished speaking, his tone suddenly changed, and he roared angrily:

"Who allowed you to barge into my daughter's room? Kill... kill, can't... kill, daughter will be angry..."

Natsuhi was used to this and muttered to himself:

This love is truly pure...

"This kid is really bold. Every time I see him, he brings something new. In just two days, he's already playing around, dancing on the edge of death."

Gojo Satoru, who was observing his student's safety, was eating ice cream. He reached into his right pocket, fumbled around, took out his phone, took two pictures of Natsuhi, and then posted them on his social media.

[Gojo Satoru: Traveling, I unexpectedly ran into students on a mission at night, and saw them holding hands with the boss's daughter. Congratulations.]

After posting, he left contentedly. Although his initial reason for coming out was to protect him, it seemed he didn't need his protection at the moment. As for the Cursed Spirit on Mitsuchi Mi...

He felt like it would make its move on the last day. Although he didn't know why he had this feeling, it just popped into his head: on the last day of his departure, there would be a great battle!

"Heh, how interesting."

At this moment, Natsuhi started to push his luck, pulling Mitsuchi Mi's left hand and saying, "I want to eat something delicious."

Mitsuchi Mi didn't mind, coaxing him like she would a younger brother, "Okay, I'll take you out to buy some."

"Mhm."

After replying, Natsuhi lowered his head and stared at the ring on her hand. He had been holding her hand since they left the room. Although the Cursed Spirit had initially become agitated, it hadn't done anything to him.

It just roared: "Let go, let go! Don't touch my daughter's hand..."

His right hand touched the ring that was within close reach, feeling the powerful Cursed Energy within. To be honest, it felt like dancing on a landmine; if he wasn't careful and went too far, he would be blown to smithereens.

However, this was just the beginning. It had only been two days, and there were still thirteen days left, which was enough time to make it not resist him. After all, when Harukaze Mashi got close to it, it didn't react at all, as if it were normal.

Time passed quickly. After an hour of wandering, the two returned the way they came, clearing out a few impudent stragglers and a squad of black-clad figures who had been tailing them for a while along the way.

Back at the villa, since her door had been broken by Natsuhi, and she didn't want to disturb Harukaze Mashi who was sleeping, Natsuhi ended up staying in her own room.

"Although I'm happy right now, you're still going to sleep outside. I'll be taking your room for now. See you tomorrow."

"Oh..."

Watching the door close, Natsuhi didn't pay it too much mind. Instead, he sat directly on the floor, gazing at the night view outside the hallway window. Gripping the sword sheath in his hands, he leaned against the corner of the wall and fell asleep.

He didn't know if his back would hurt tomorrow, but he was used to sleeping like this. Being kicked out of his home by that person at night, sitting helplessly on the ground alone, looking up at the moon, sleeping under its companionship and the gaze of the stars.

These were all common occurrences...

The next day.

Though without the company of an alarm clock, his biological clock instinctively made him open his eyes. Watching the morning light outside the window, Natsuhi slowly got up, rubbed his slightly numb backside, and said:

"I slept pretty well, just my butt's a bit numb, and my back... is a little uncomfortable too."

After stretching his body, he began a new day. As soon as he walked out the villa door, he was challenged to spar. After briefly teaching them, he went with Mashi-nee to have breakfast.

After breakfast, he went for a morning run with Mitsuchi Mi. These were all part of the routine, but what was different was that she wore the ring, and the Cursed Spirit seemed to have accepted him as well, not roaring or threatening him.

Natsuhi also stayed by Mitsuchi Mi's side all day, playing the role of a younger brother, gradually getting closer to her and truly integrating into their circle.

In the evening, he trained with Teacher Shuichi. This life was orderly, peaceful, and leisurely. Slowly, time came to the final day.

Natsuhi also realized that today was the so-called final battle. If he won, he'd achieve fame and return to Jujutsu High to brag to them. If he lost, he'd end up as ashes in an urn, listening to their tearful cries.