Author's Notes:

Hi everyone!

This fanfic is created randomly because I was bored and asked chatgpt to pretend to be Satoru Gojo (and my boyfriend heh). It was kind of frustrating because chatgpt doesn't know what kind of story I want it to be. So this is where we are now. I AM CREATING THIS SO I KNOW WHERE I WANT THE STORY TO GO.

A few reminders: (It will be updated as we go.)
1. Please do not repost without my permission. However, feel free to share the link to this work. This is posted both on AO3 and here.
2. This is AU CANON. I tried hard to fit the anime/manga to the fanfic. Saying that, this storyline will somehow deviate from the anime/manga storyline. Somewhere at the end of season 2 in the anime.
3. There will be some scenes related to the anime/manga but do not expect all of them to appear in here as this is narrated in FMC's POV.
4. Satoru Gojo in this story is not blindfolded. He's wearing the round sunglasses we all love.
5. PLEASE, PLEASE LEAVE REVIEWS. I want to know what you guys think. And it will inspire me to write quicker. Believe me, I type like mad when I'm inspired. (Like I typed this within 6 hours. Hehe) Thanks. ;)

The Other Half

A JJK Fanfic

Satoru Gojo x FMC

Chapter 1: Sukuna's Vessel

I idly glanced at the clock, the hands ticking away the seconds past ten in the evening. Satoru wasn't back yet. He'd mentioned earlier that he'd return from his special assignment in Miyagi this afternoon, but a sudden message said something urgent came up. I had no idea he meant this late.

Standing in front of the mirror, I brushed my hair slowly, my mind drifting. He always pushed himself so hard. I couldn't help but wonder what he might be facing out there—anxiety prickled at the edge of my thoughts, but I shook it off. Gojo Satoru could take care of himself. After all, he was the strongest sorcerer in the world.

With a soft sigh, I grabbed my phone and sent him a quick message:

I'm gonna go to sleep now, Sa-chan. I'm pooped! (-) Nightttt! Come home!

The pillow cradled my head as I settled in, and before I knew it, sleep claimed me.

-xXxXx-

I didn't know what time it was when the bed dipped, a familiar weight easing down beside me. A pair of strong arms wrapped around me, enveloping me in warmth that chased away the cold.

"Mmm," I mumbled sleepily, somewhere between the haze of dreams and reality.

"Sorry Eri, for being late," Satoru's voice was a murmur, a low vibration that soothed me. I felt his lips brush against my jaw in a gentle kiss. "I had to interrogate an interesting student today."

"Mmm…" I hummed again, too groggy to form coherent words.

He chuckled softly, the sound deep and comforting. "I'll tell you all about it tomorrow." He stroked my hair gently, and I snuggled closer to his warmth, feeling the tension I hadn't realized I'd been holding release. "Goodnight, Eri."

-xXxXx-

"For real?" I blinked, setting my cup of tea down carefully on the table. It was Monday morning, and we were getting ready to head out for our first day as teachers at Jujutsu High.

"Yeah!" Satoru laughed, his voice bright with excitement. He ran a hand through his tousled white hair, making it even messier. "This kid really ate one of Sukuna's fingers and still managed to retain control. Unbelievable, right?"

He stood up and grabbed a paper bag, a mischievous grin plastered on his face. "I brought you some souvenirs from Miyagi. Hope you like them—they're delicious!" He handed the bag to me with that same boyish grin, as if he hadn't just dropped a bombshell. "I hope it's not squashed, though. I let Megumi hold it for a few seconds while I was busy fighting Sukuna."

"What?! You did what?!" I almost choked on my tea, my eyes wide. "And… thanks." I murmured, peeking inside the bag and finding a neatly packed set of Kikufuku sweets.

"Had to know if the kid could really control Sukuna, you know?" He shrugged nonchalantly and continued sipping his tea. He finished quickly, then grabbed my cup as well, taking it to the sink. "The school directors wanted him exterminated, but I argued he could be Sukuna's vessel."

My gaze lingered on his broad shoulders as he washed the dishes. I knew him well enough to understand what he really meant. Satoru wasn't just solving the problem; he was delaying it long enough to come up with his own solution. That's just how he was—strategic, brilliant, and sometimes infuriatingly reckless.

"They think he's a ticking time bomb, huh?" I mused, leaning back in my chair.

He chuckled, the sound low and confident. "Yeah. The old gits didn't see the potential I saw." He glanced at me over his shoulder, his eyes sparkling with that familiar intensity. "But I'm sure he'll be an amazing sorcerer."

I couldn't help but smile. Satoru always saw beyond the surface—where others saw danger, he saw promise. That was part of what made him so unique.

"Ready to go?" He asked, his grin returning as he offered his hand.

I took it gladly, warmth blooming in my chest as our fingers intertwined. "Let's go."

His hand extended towards me, and I took it without hesitation. This devilishly handsome man, Satoru Gojo—the strongest sorcerer in the world, some would say. But to me, he's the guy with the annoying habit of showing up late and making me laugh. We've been living together for a while now, despite the occasional disapproving looks from the older generation. Tokyo is expensive, after all, and Satoru's constant missions made our weekends together a luxury. Even though he always insisted on paying for everything, I liked the sense of partnership we had.

As he left me at the infirmary, Satoru leaned down to kiss my hair. "Enjoy your first day at school, Eri. I'll pick you up for lunch."

"Don't cause too much trouble on your first day, Sa-chan. I don't want to be called to the principal's office." I poked his side, earning a mischievous laugh.

"No promises."

The school infirmary was small but functional, with three beds, curtains dividing them, shelves full of medical supplies, and two desks with computers. Shoko Ieiri was the school's primary doctor, handling the more complex cases, while I was here to take care of the day-to-day injuries and ailments. My cursed technique allowed me to heal students by regenerating their cells, speeding up their recovery.

At precisely noon, Satoru slid open the infirmary door. "Hey," he called out with a wink, lowering his sunglasses just enough to show those mischievous eyes. "Missed me?"

I smiled, handing him his lunchbox. "How's your first day going?"

"Exterminated a curse in Roppongi and confirmed that my students are all a bit crazy," he said, laughing between bites of his lunch. "Megumi, Yuuji Itadori—the kid who ate Sukuna's finger—and Nobara Kugisaki, the only girl, but man, she's tough. Carries a hammer like it's nothing."

"She sounds interesting."

"She is," he said, grinning. "Her technique is almost like voodoo. I swear, I'm so lucky to have such entertaining students." He clutched his heart as if he was touched. "Ahhhh, it's so nice being a teacher~"

I laughed, amused. "I bet they think you're the crazy one."

"Oh, they love me." He puffed his chest out with pride. "Even Sukuna threatened to kill me! That's how you know you've made it."

I nearly choked on my rice. "He what?!"

Satoru passed me my water bottle, his smile easy and reassuring. "It's fine, Eri. I'm the strongest, remember?"

Despite my lingering worry, his confidence was contagious. I nodded, kissing his hand as he brushed my cheek.

-xXxXx-

At 4 p.m., Satoru still hadn't shown up, which was unusual. Normally, he would've been here by now. I finished tidying up the infirmary and checked my phone, but there were no messages. Just as I began to wonder, the door swung open, and Satoru stepped in, his hair more disheveled than usual.

"Did you run here?" I asked, standing up.

"Had to lose the students," he said with a laugh, wrapping an arm around me. He leaned in to kiss my temple. Before I could respond, two out-of-breath students appeared at the door—Yuuji and Nobara.

"We found you, Gojo-sensei!" Nobara shouted, pointing at him, but their expressions quickly shifted to surprise when they noticed how close we were standing.

"Gojo-sensei's girlfriend," Yuuji whispered to Nobara, who nodded knowingly.

"I think so, too." She whispered back.

"Nice to see you, Nagi-sensei," Megumi said as he appeared behind them, bowing politely.

I smiled, pulling away from Satoru. "Hello, Megumi. These must be your new classmates. I'm Erina Nagi, the school nurse. Welcome to Jujutsu High."

"Wow, Gojo-sensei, you have a reallllly beautiful girlfriend," Nobara said, giving Satoru a thumbs up. He winked back at her, raising both his thumbs up. "Didn't know you liked brunettes." She snickered.

Yuuji bowed deeply. "It's a pleasure to meet you, Nagi-sensei!"

As I stepped closer to Yuuji, I noticed a strange scar under his eye. "Would you like me to take care of this scar?" I asked, reaching out to heal it. But the moment my fingers touched his skin, an eye popped open, staring directly at me. After a minute, it closed on its own.

I yanked my hand back in shock. "Was that…?"

"Yeah, sorry about that," Yuuji said sheepishly, scratching the back of his head. "Sukuna sometimes shows up without warning."

Nobara crossed her arms, smirking. "Nagi-sensei, what I really want to know is why you're with this blockhead of a sensei."

Satoru stuck his tongue out at her as he draped an arm around my shoulder. "Are you jealous, Kugisaki? Do you want someone to hold you, too?"

I elbowed him, sighing. "Satoruu…"

Yuuji, still curious, asked, "Nagi-sensei, may I ask what your cursed technique is?"

"Well," I began, feeling a little embarrassed, "I can regenerate cells, which is why I'm the school nurse. I help speed up the healing process."

Satoru grinned, pinching my cheek. "Don't be so modest, Eri. She can also degenerate cells—if she touches an enemy, they'll decay and die within minutes." He held his nose smugly in the air. "That's my lovely girlfriend~" He remarked even though no one was paying any attention to him anymore.

"Whoa, that's incredible!" Yuuji's eyes sparkled with admiration.

I laughed nervously. "It only works on humans, though. For some reason, my technique doesn't affect curses which is ironic."

"That's rare," Nobara mused.

"Maybe it's because I was born prematurely. That's the only explanation we've come up with."

Yuuji nodded thoughtfully. "But you still help a lot of people, right? That's amazing."

I smiled at his kindness. "Yes, I do."

Satoru clapped his hands. "Alright, enough chit-chat. I'm ready to go home and spend my evening with my beautiful girlfriend~! Good bye kids~! I don't have any responsibilities anymore after 4PM~"

As we left, I turned to Satoru. "They seem like good kids."

"They are," he replied with a snicker. "Hmmm, I think I forgot something, but nevermind. I just wanna go home with my Eri~" He rubbed his cheek against mine.

I laughed. "Stop that, Sa-chan!"

BONUS LITTLE SIDE STORY:

Satoru Gojo practically skipped away when the bell rang. "Goodbye, dear students! See you tomorrow!" he sang, waving his hand behind him without so much as a backward glance. "Lalalalalala~"

"Why is he so… happy?" Nobara muttered, eyeing his retreating form suspiciously.

"He's going to pick his girlfriend up," Megumi replied matter-of-factly as he dusted off his trousers.

"WHAT?!" Nobara grabbed Megumi by the collar with surprising speed, her eyes wide. "GOJO-SENSEI HAS A GIRLFRIEND?!"

"Uh, yeah. Can you let go of me?" Megumi tried to pry her fingers loose, but she only tightened her grip.

"IS SHE PRETTY?!" Nobara demanded, staring into his soul.

"Uhh… I guess?" Megumi winced.

"That's not the right answer!" Nobara released him with a huff, then turned to Yuuji. They exchanged a look—a silent, mischievous agreement.

"I wanna see sensei's girlfriend," Yuuji said, nodding.

"Me too," Nobara agreed. "I need to know what kind of woman can actually tolerate that annoying face."

Before Megumi could stop them, they were off, sprinting after their white-haired teacher like a couple of overexcited puppies. They darted around corners, ducked behind bushes, and tried to keep a safe distance, but no matter how hard they tried, Gojo would disappear and reappear at random. It was like chasing a cat with teleportation powers.

After what felt like the hundredth time Gojo vanished right in front of their eyes, they found themselves back in the school courtyard, completely out of breath.

"H-How…" Nobara wheezed, clutching a stitch in her side. "How can he be that fast?!"

"I think… he's walking on air or something," Yuuji replied, breathing heavily as well, "But even I couldn't keep up with him!"

Megumi strolled over, looking suspiciously unbothered by all the running. "Why don't you just go to the infirmary?"

The two of them gawked at him, faces drenched in confusion. "Why?"

Megumi sighed, his expression somewhere between pity and exasperation. "His girlfriend is the school nurse."

Nobara and Yuuji shared another look—this time one of pure disbelief.

"WHAT?!" they yelled in unison, and before Megumi could even blink, they had him by the arms, dragging him toward the infirmary.

"I—Wait—What are you two—?!" Megumi stumbled over his own feet, completely caught off guard.

"We need a guide," Nobara declared with absolute conviction.

"And you're coming with us!" Yuuji added cheerfully.

What the trio didn't know was that Satoru had been watching them from the roof the whole time, grinning like a proud prankster. With a wink to no one in particular, he adjusted his sunglasses and strolled off.

"Time to introduce Eri to my little underlings~" he mused, whistling happily. "I can't wait to see the look on their faces! Hehe…"

Turns out, the strongest sorcerer didn't mind getting tailed at all—he just wanted to show off the fact that he had a girlfriend. (*n.n)v