Duality || Reader x Sukuna/ Yuji

Fear and confusion shot through my wide e/c eyes. I opened my mouth to speak, but at first nothing came out but a terrified squeak.

"Y-yuji?" I managed finally as he looked down at me and an unnatural smirk stretched across his face. Everything about him was sharper and crueler.

"Hm, how interesting," he grumbled before standing up and stretching, "my new vessel has a female companion. I thought he was a complete pathetic loser." He smirked to himself before turning to me and tilting his head, running his hand through his hair.

"My name is not Yuji, woman," he sneered annoyedly. "I wonder how the little punk will react if I hurt you..."

My mind my was reeling with confusion and terror.  I seemed to be frozen in place. I wondered if this had something to do with the curse thing Sasaki was talking about.

"W-what's your name?" I whispered shakily as I looked up at him, my eyes falling to the black mark around his thick wrist as he reached out towards me.

"Why, little one, I'll only tell you this once, so try your best to remember, or I might get upset. My name is Ryomen Sukuna. King of curses... and you should say goodbye to your boyfriend. When I take him over completely, there will only be me, and no more Yuji Itadori."

Just as his rough hand slid around my jaw, squeezing and gripping it slightly, he seemed to struggle, as something inside of him was trying to fight it's way out. "Ugh. You just don't give up, do you, little punk?"

Who was he talking to now? I didn't have time to ask. His hand dropped from my jaw and the black marking disappeared from his wrist and face while the second set of eyes closed back into the crescent shaped scars.

The cold, distant look on his chiseled face subsided into something softer and almost as terrified as my own as he realized what happened. "Y/n... what was I doing? Did...did he take over?"

I could tell immediately from the softness of his voice that this was my Yuji. I hesitated before nodding.

"Yes... y-you fell asleep, and then...Sukuna? took over. Yuji, what the hell is going on? Why is 'the king of curses' inside of you? What does this all mean? I'm so confused..." My lip began to quiver and I felt my eyes burn as tears began to surface despite my desperate attempts to hold them back.

Finally, after he apologized a million times over for letting his guard down, he sat down beside me and explained what happened that night I went home sick. All the terrifying things we joked and toyed with in the occult club were completely real, and worse than we thought.

"This guy with a blindfold told me I had two choices. I could be executed on the spot, or I could allow myself to be Sukuna's vessel and help track down the rest of the fingers. So far, I've been completely able to control when he comes out, so I...I don't know why that just happened." Yuji looked down with a frown. "I'm going to be attending Jujutsu High in Tokyo. It's a little farther from here... but we'll still be able to visit."

This all was so much to take in. I swallowed back my confusion in order to keep a collected front for Yuji. I could only imagine how much stress he was under right now.

"Did he hurt you or threaten you, Angel?" Yuji uttered worriedly as he gently reached out, taking my hand to try and soothe me as my heart was still racing nonstop.

"Uhm... no, he didn't say anything. You changed back before he could touch me or say anything." I lied. I knew Yuji would only feel more guilty if I had told him what really happened.

Yuji sighed and pulled me closer gently, kissing my cheek as he held me protectively. "That's a relief. I promise, I'll do my best to make sure he never hurts you."

I buried my face into his warm shoulder and sighed. Despite how confusing all of this was, I believed Yuji more than anything, and I trusted him. I was fully willing to accept this new, dark and unpredictable part of him, even if it meant possibly sacrificing my safety.