*no one's pov*
"huh... a finger?" Y/N muttered in confusion.
Looking at the finger in the opened box, his mind suddenly clicked.
"HUH, SUKUNA'S FINGER?!" Y/N said in shock before putting his hand over his mouth to muffle himself, waiting a few minutes before moving it away.
"Phew, good thing Sasuke isn't here... okay, I think this is the surprise G was talking about," Y/N said while picking up the finger.
"Hm.... I think he wanted me to swallow the finger, but won't Sukuna control me? But I don't think Sukuna will be able to control me, or if he even exists. I mean, if he will be able to, then why would G give the finger to me?" Y/N said while inspecting the finger.
"...alright then."
Y/N tilted his head up a bit before holding the finger above his opened mouth.
'Here goes nothing!' Y/N thought as he finally made up his mind and put the finger in his mouth and swallowed it.
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'Uh... nothing's happened... we-ACK!' Y/N suddenly felt so much pain, more than when he was tortured.
๏ฟผ
"AAH! THIS HURTS LIKE A BITCH!" Y/N screamed in pain as his body adapted to the finger.
After some time, the pain slowly stopped as it subsided.
Y/N was panting in pain and exhaustion. "Damn it... t-that was a lot... I've never experienced this much pain in my life.."
Y/N looked at his hand and clenched it. "Well, I don't feel like someone is inside my head or something..." He unclenched and clenched his hand in anticipation. His face was also covered in tattoos.
"I can't feel my chakra, meaning it's gone. But I feel another weird, violent energy instead of the previous calm one. Must be cursed energy," Y/N muttered to himself.
Before heading to the door, Y/N tried to make the tattoos on his face disappear, which he was able to do. Wanting to leave to see how to activate the said energy, he opened the door to find Sasuke stretching his arm, looking like he was about to open it.
Both blinked before Y/N greeted him. "Hi?"
"You were gonna leave?" Sasuke asked with a depressed look on his face.
Y/N, seeing his expression, felt saddened a bit before responding, "Yeah, I was gonna go train outside."
"I see. You'll find me in my bedroom when you come back," Sasuke said as he walked past Y/N to his bedroom.
Y/N sighed at the sight and left the house, closing the door behind him. He walked to the training ground in the Uchiha district. After a bit of walking, he got there.
Standing on the training ground, Y/N looked at his hand, then sat down.
"Hm... I've got to meditate to be able to see my cursed energy... maybe I'll find my own innate domain too," Y/N said as he closed his eyes and crossed his legs.
After a while...
Y/N didn't feel any different from before, so he decided to get up, seeing that meditation wouldn't work.
He opened his eyes to see himself somewhere else instead of the training ground.
"What the?" Y/N asked. He felt like he was sitting on something wet. He looked down, seeing what looked like blood, but orange. Weirdly, although he was sitting on it, his clothes weren't wet.
"This isn't blood? It's my cursed energy..." Y/N got up quickly and looked around.
"And this is... my innate domain?" Y/N said while looking around.
It was orange in color, dark orange to be exact. There weren't any skulls, thrones, or anything like he expected. It was just a dark orange expanse.
"Huh, weird... Maybe it's because I am still innocent? Feels sketchy, but it's possible that Sukuna got his innate domain the way it is because he kept killing people for the love of it, while I haven't killed anyone... at least not yet."
"Come to think of it, Naruto's own mindscape was very dark from the beginning and started to grow brighter as he grew up, reflecting his situation. I guess it's the same with me. I assume this will get darker the moment I go into my ninja path... Oh well, it's the ninja world after all, and it wouldn't be wise to just not kill when necessary or needed when I have literal cutting powers," Y/N said to himself.
"Hm... Maybe I can use this place to train whenever I am concerned about being seen by people. This place is useful," Y/N smirked to himself.
He wandered around. There wasn't anything new besides the fact that his cursed energy was like a sea with how large it was. Though he stumbled upon a very dark red small pool.
"Huh? What's this?" Y/N said as he crouched beside it.
"I think there won't be anything wrong when I touch it, right?" Y/N said as he put his hand close to it. As soon as he touched it, he got flooded with memories.
"ACK!" Y/N pulled back in pain as he clutched his head... After a moment, the memories stopped flooding in.
".." Y/N was, to say the least, terrified,but not that terrified for someone who had just seen the memories of a maniac.
"This feels like it's my own memories??" Y/N was a bit confused. He saw that a small part of the red pool turned dark orange like the rest.
"Huh?" Y/N drew closer and touched another dark red spot, but there wasn't any reaction.
"Strange... Maybe I need to eat more fingers." The more he thought about it, the angrier he became.
"Keh, it's insulting to think that fragments of ๐ ๐ soul are with those pathetic inse-" yn suddenly put his hand on his mouth to shut himself up.
"Huh, the hell... Tch, I've got to make sure that my- I mean, his memories don't affect me negatively..."
"But it seems I got like between 2-3 years of his memories. Maybe each finger holds a memory, and that's what these red blood spots are," Y/N said to himself, trying to understand what was happening.
"Oh well. But his memories really help me. It makes my essence more... negative, helping me in activating my cursed energy." Y/N smirked as he saw a tiny amount of cursed energy in his hand.
"This works... I guess I've gotta think that I want to get out of here to leave."
Y/N sat down again as he started meditating, thinking of going through a door that led to the outside world.
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Y/N slowly opened his eyes to see himself on the training ground. He saw that it was still morning, meaning he probably spent an hour or two inside.
"Well, it works," Y/N said as he got up and looked at his hand, clenching it.
"Now... how do I activate cursed energy? Do I have to feel negativity every time? I don't think so. People in Jujutsu Kaisen didn't seem that affected by such negativity. So maybe it's something else..." Y/N muttered to himself.
Y/N closed his eyes, searching for what constantly made him feel sad, angry, or any bad emotions... Maybe his mother's and brother's deaths? Yeah, that would work.
Y/N slowly opened his eyes. He saw dark orange-colored energy around him, overflowing. He immediately tried to control it but failed.
"Hm... I can try to feel like I have a gravitational force and it's pulling toward me?"
Y/N tried but failed, though he noticed a slight tug.
"No... I think I get it. I own this cursed energy. It exists in me, and I control it. Non-sorcerers are like containers with holes-leaky pipes. They leak 'water,' while the 'plumber' stops the leak. The mind is the plumber... therefore, I am able to..." The cursed energy around him started to act according to his will. It gathered and concentrated around his hand.
"...control it." Y/N smirked as he finished the sentence, looking at his hand covered with cursed energy.
"Yes, I've grasped it! I thought it'd be harder, honestly," Y/N smirked, but as soon as he looked forward, his smirk fell into a frown.
In front of him stood a weird type of monster. It was humanoid, gray in color, and way too still.
"A cursed spirit? Probably manifested by my previously uncontrolled cursed energy. Looks like Grade 2 or 3? W-"
Before Y/N could continue, the cursed spirit dashed forward in a straight line toward him. He reacted in time and blocked, but he was sent flying due to the strength of the punch.
Y/N flipped and landed on his feet. 'Tch, fast... and strong too.'
Y/N directed his cursed energy to his eyes and legs to react better. Though the delay in transfer allowed the cursed spirit to close the distance again, dashing in a straight line and punching him in the stomach. However, Y/N had already transferred cursed energy there, allowing him to withstand the attack and counter with an amplified punch to its face, making it fall to the ground. It backflipped and landed safely.
'Tch, I can't damage it,' Y/N said as he saw the curse heal itself.
'I need to punch its head off or make it exhaust its cursed energy.' Y/N, deciding what to do, rushed forward as the cursed spirit rushed toward him as well.
They exchanged blows. The cursed spirit was slightly faster than Y/N, allowing it to react to his punches. It tried to punch Y/N in the face, but Y/N dodged and counterattacked with a right hook to its ribs, making it stagger. Y/N took advantage and barraged it with amplified cursed energy punches.
๏ฟผ
The cursed spirit was sent flying, colliding with a tree. It got up and screeched at him before rushing in a straight line again. This time, Y/N dodged more easily as he realized something.
'Huh? Why is it so predictable? From rushing in a straight line to leaving itself open and always aiming for obvious areas. It's like... it's being controlled?' His eyes widened slightly in realization.
'I see. So this is my fear of being controlled and not being able to change anything in this world... In that case, I'll annihilate my fear!'
With new resolve, Y/N channeled cursed energy to his fists and legs. It wasn't very strong due to his control, but it would do.
Y/N grabbed the cursed spirit's stretched punch and elbowed it, breaking its arm. He then kicked its head, slamming it into the ground.
Y/N sat on top of the curse and started punching its face.
"Just die already!" Y/N said as he gritted his teeth.
Suddenly, the curse grabbed Y/N's arm and punched him in the stomach, sending him off. He flew back but flipped and landed on his feet, coughing up blood.
"T-that was stronger than before..." Y/N said as he clutched his stomach and looked at the cursed spirit.
The cursed spirit stood up and healed, looking at Y/N with a blank face-well, it didn't have a face to begin with.
"....Is this phase two or something?" Y/N asked while deadpanning.
The cursed spirit prepared to lunge at him.
"Whatever... I forgot I have this." Y/N activated his three-tomoe Sharingan and took the cursed energy he was transferring to his eyes and redistributed it to his body for protection.
Both Y/N and the cursed spirit stared each other down before it lunged at him. Y/N responded with equal speed but lesser strength.
They clashed and exchanged blows. Y/N's taijutsu was clearly better, but the cursed spirit's strength was formidable, pushing him back during exchanges.
Y/N ducked under a punch and tried to sweep it, but it jumped away before rushing again-this time faster-catching Y/N off guard with a kick to his chest, making him fall. Before he could get up, the curse sat on him and began barraging him with punches.
'Is this revenge or something?!' Y/N thought as he tried to dodge and block as much as he could, but he couldn't block or dodge much. He kept getting hit, his face becoming bloody.
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Before the cursed spirit could throw another punch, Y/N's Sharingan flared crimson as he said...
"๐๐ถ๐๐บ๐ฎ๐ป๐๐น๐ฒ"
The curse was sliced multiple times by invisible slashes and launched away. The dismantle sliced through its body but not deep enough to be fatal.
Y/N got up, his hair covering his eyes before he looked up at the cursed spirit.
"How ๐๐ถ๐๐๐ฎ๐๐๐ฒ๐ณ๐๐น to be beaten down by something like you. Know your place, ๐๐ผ๐ผ๐น."
Suddenly, multiple dismantles hit the cursed spirit again, this time slicing deeper.
Y/N walked forward as the curse was struck repeatedly, unable to do anything. Y/N stood in front of it as it fell to its knees.
"๐ฃ๐ฎ๐๐ต๐ฒ๐๐ถ๐ฐ."
Before the curse could retaliate, its head was sliced off cleanly. It turned into smoke.
As the smoke disappeared, Y/N was seen holding his head.
"Ugh, not again... I should seriously control myself..."
Y/N looked around, not finding anyone spying on him.
"Good..." Y/N said as he noticed it was afternoon.
"Damn it... I can't train now... I've got to go home... whatever."
Y/N slicked his hair back before putting his hands in his pockets and leaving the training ground.
//He arrived home, talked a bit with Sasuke, and the day continued until they slept.//
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To be continued.....