Into the Hunter x Hunter world with Jujutsu Kaisen System

When Sachiko opened her eyes, she found herself on the busy streets of a city.

'Where am I?' Sachiko tried to read the street signs to figure out where she was.

It didn't take long for her to figure out she was in Toshima, Tokyo. She started to look around and see if this city is actually different from her world but it looked exactly like Japan. Well, except for some of the curses lurking around.

'I should exorcise them. But, let's not do it obviously?' Sachiko thought. The last thing she wanted right now was to run into characters from Jujutsu Kaisen. She didn't want to get involved in any mess right now.

Sachiko started to look for a more deserted place with curses, then she remembered something.

'System, is there a time limit on staying in this world?'

'You can now stay in Jujutsu Kaisen for 24 hours every time you travel here. Your weekly limit on traveling here is once a week. You can increase the numbers by upgrading the system.'

Hearing she could only stay 24 hours, Sachiko felt urgent need to exorcise curses. 'Hospitals and schools. They are places where negative emotions form mostly.' Sachiko mutters as she remembered the information from the manga.

'Hospitals are not deserted. But, schools...no one studies at this hour.' Sachiko thought of this and headed for an elementary school.

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The school gates creaked open as a certain white-haired girl sneaked in. She was still wearing the outfit she wore for hunter's exam first and second phases. She walked inside the building after making sure no one was around.

Only after walking into the building, Sachiko realized she forgot to bring a flashlight. She stood there for a few seconds, contemplating her options. She could go and buy a flashlight before continuing further. Or she could just walk into the building without being able to see much. Now, normally, she should've gone back and buy a flashlight. But, Sachiko continued into the building even though she knew she would regret this five minutes later.

"I can't really see anything. Are those supposed to be stairs?" She muttered as she went up there. She walked past the hallway and glanced into the dark classrooms until she found a weird shadow.

"Is this supposed to be a curse?" She blinked. "I can't really see."

"Do...do you want to...play.. with me?" The shadow ran towards her and then circled her as if it was a child trying to play.

Sachiko felt shivers ran down her spine. The feeling got much worse when that shadow ended up being a slimy touch against her arms. She shouted before blasting it off with her outburst of cursed energy. She probably wasted a lot more cursed energy than it would normally need to exorcise that level of curse but in her defense, she wasn't really prepared for this.

Sachiko had to take a few deep breaths before she could calm down. She then checked her status window.

'Name : Nakamura Sachiko

Alias : None.

Age : 19

Relationships : Gon Freecs (Friend), Killua Zoldyck (Friend), Kurapika (Acquaintance), Leorio Paradinight (Friend), Hisoka (Acquaintance)

Assets : One and a half billion yen.

Hunter level : Not accessible yet.

Jujutsu sorcerer level : Not accessible yet.

Cursed technique : Cursed energy manipulation (Competent), Time Manipulation Eyes (Novice)

Cursed energy : 4901/5000

Cursed energy reserves rank : D

Curse points : 50

Hunter points : 150

Cursed tools : None.

Skills : Intermediate Sword Skill (Advanced beginner)'

"It's not that bad." Sachiko sighed in relief. "Did I get 50 cursed points?" She asked as she noticed the change in number.

'Since the curse was a grade-4 curse, host get 50 points. The higher ranked curses you kill, the higher points you will get. Please work hard.'

'I see, don't I get any rewards for killing a curse for the first time?' Sachiko asked.

'With your current strength, exercising this level of curse shouldn't be a problem. Therefore, no rewards.'

'...'

Sachiko didn't think she would want to beat the system up. She knew she couldn't because it wasn't tangible.

She continued looking for more curses with a sour mood. She found some more grade-4 curses as she searched. This time, she exorcised them with her cursed energy sword. It was easier and didn't take much cursed energy.

"Simple and efficient." She said. "But should I try making something else? I mean I need to practice making more weapons out of cursed energy. A bow sounds great tho."

"After finishing here, I will probably go find a place to train. I have to train my time manipulation eye too. Since I can refill my cursed energy faster here, I should train it here."

With that thought in mind, Sachiko started to pick up the pace of exorcising curses. Most were grade-4 , some were grade-3 but it was not challenging.

Sachiko got around 1000 points by the time she was done at the school. She didn't exorcise all of the curses there. Firstly, she didn't want to draw attention. Secondly, she had limited vision in the dark so she didn't feel like staying there for long. Thirdly, she didn't want to risk facing a high grade curse. So, she decided to stop.

After leaving the school area, Sachiko headed to a convenience store.

'Right, system, I have one and a half billion yen, right? How can I use that money? I can take it out, right? Also, this identiry issue.. Am I like a real existent person here?'

'You don't have to worry, host. Since you can travel between the two worlds, you naturally exist in both worlds. System has prepared an identity and debit card to use in this world.'

'umm. Thanks?' Sachiko took out the identity card and then blinked, 'System, why am I 18 on this card?'

'....'

'System?'

Getting no response from the system, Sachiko sighed and put the cards away. She went into the convenience store to buy some necessities.

She bought a flashlight, bandages, clothes and medicine. She also deciced to buy tuna mayo onigiri and hot coffee to eat on the way. She decided that she wanted to go to somewhere far from Tokyo. Hiroshima didn't sound bad so she decided she would go there. The only problem was it takes about 4 to 5 hours to get there.

'If I sleep on my way there, that should be better.' Sachiko thought. At this moment, she wished she had teleportation but she unfortunately didn't. There was nothing she could do about it.

She had already missed evening trains so she had to wait for a morning train. It wasn't ideal but it wasn't that bad, considering it was about 3 a.m now, she only had to wait three more hours.

'I will also need a phone.' Sachiko thought as she headed to a hotel to wash up and hopefully, train her cursed technique. She went to a nice hotel and got the most expensive room.

Sachiko jumped onto the bed first thing after getting in. Only after lying there for a few minutes, she took a nice, long shower. Then, she changed into an oversized T-shirt.

After that, she sat on the bed and removed the bandages on her left eye. Before training, she checked how her cursed energy was faring.

'Name : Nakamura Sachiko

Alias : None.

Age : 19

Relationships : Gon Freecs (Friend), Killua Zoldyck (Friend), Kurapika (Acquaintance), Leorio Paradinight (Friend), Hisoka (Acquaintance)

Assets : One and a half billion yen.

Hunter level : Not accessible yet.

Jujutsu sorcerer level : Not accessible yet.

Cursed technique : Cursed energy manipulation (Competent), Time Manipulation Eyes (Novice)

Cursed energy : 4480/5000

Cursed energy reserves rank : D

Curse points : 50

Hunter points : 150

Cursed tools : None.

Skills : Intermediate Sword Skill (Advanced beginner)'

'Okay, theoretically I should be able to use the time manipulation eye for 44 minutes with this amount of cursed energy. But that is just slowing the time.'

Sachiko thought. She started training to slow the passage of time, then the rate of slowing down. After training for nearly half an hour, Sachiko was at her limit. It was not because she ran out of cursed energy but it was because she was using her eye, constantly concentrating and that was draining for her.

She still have 1400 units of cursed energy when she stopped training. That said, the training wasn't without any fruits. She learnt that she could potentially stop time as long as she kept training. She could also fasten the time passage. Now, she couldn't do those feats yet but at least, she could control it better. Her level of mastery also levelled up to advanced beginner. Sachiko believed she was on the right track.

After taking a short break of thirty minutes, she noticed her cursed energy had been refilled to 1900 units.

'Being in jujutsu kaisen really fastens the rate by 10 times.' Sachiko thought. She resumed her training, but this time, she trained her cursed energy manipulation technique.

After training for about an hour and using up almost all of her cursed energy, Sachiko stopped her training. She managed to create a bow and arrows with cursed energy. She also succeeded making a multiple threads of cursed energy to hold against a target but she still didn't like the firmness of the threads she made. She thought it could be better.

She looked at the clock and realized it was already 5:30. She quickly changed into new clothes before checking out of the hotel. She left for the train station and buy tickets for the earliest train she could get.

It was already 6:10 a.m. when she got to the station so she could only buy a ticket for 6:30 train. While waiting for the train, Sachiko got a coffee and hotdog from a vending machine.

At 6:30, she got onto the train. She exorcised some curses attached onto thr people she saw as discreetly as she could. She still got some weird glances from people but Sachiko acted like she didn't know.

As a result, she collected 800 points on the train alone. When she got bored, Sachiko stared at the window view. That was when she got an idea. To train her cursed technique : time manipulation eye again.

She trained until she got tired from concentrating. She noticed she had only 100 cursed energy left but she didn't worry much. Since she was in this world, her cursed energy would be refilled quickly.

About forty minutes later, she arrived at Hiroshima.

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Inumaki Toge was assigned to an elementary school in Toshima to exorcise curses because of the increase in numbers. When he arrived at the school, he did his job. But, something was strange. He could feel it in his guts.

He looked around the area to see what the strange thing was. That was when he saw those residuals.

It was as if someone came here before him.

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Sachiko chan's latest stats

Name : Nakamura Sachiko

Alias : None.

Age : 19

Relationships : Gon Freecs (Friend), Killua Zoldyck (Friend), Kurapika (Acquaintance), Leorio Paradinight (Friend), Hisoka (Acquaintance)

Assets : One and a half billion yen.

Hunter level : Not accessible yet.

Jujutsu sorcerer level : Not accessible yet.

Cursed technique : Cursed energy manipulation (Competent), Time Manipulation Eyes (Advanced beginner)

Cursed energy : 100/5000

Cursed energy reserves rank : D

Curse points : 1850

Hunter points : 150

Cursed tools : None.

Skills : Intermediate Sword Skill (Advanced beginner)'