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Yuji woke up the next morning and while his body was sore, there was no rest to be had. He groaned as he dragged himself off the couch, went to his room, changed his clothes and headed out for training. As he walked, he found that all he could think about was Sukuna’s hands on his skin, the kisses, the feel of his… Yuji shook his head violently. He needed to focus! He couldn’t be distracted by Sukuna right now! He found a quiet place in the back of the school and pushed last night from his mind, focusing on his physical training.
Punch, kick, twist, move, each footstep and shift was like a well coordinated dance with himself. He pictured various cursed beings he had fought against over the last few weeks, remembering their moves and the way they fought, only for his brain to focus on Mahito as his final opponent. Just the thought of the cursed being sent a wave of hot rage through him. The death of Junpei and his mother was still a raw wound, one that Yuji held close to his chest, his own personal failure. He focused on the being’s long limbs and twisted way of fighting. He thought of his various tricks and tried to imagine what else he could possibly do with such an ability. His mocking grin seemed like it was burned into his mind.
“Why are you thinking of that useless piece of flesh?” Sukuna demanded suddenly, making Yuji stumble a bit.
“What? I’m not!” Yuji snapped, dusting himself off.
“You were thinking of him. I saw it.” Sukuna replied hotly.
“I’m training! Why are you so pissy!” Yuji demanded.
“I don’t want you to think of anyone, but me.” Sukuna stated.
Yuji let out a yell and grabbed his hair.
“I wasn't even thinking of him like that!” Yuji said with a hot flush.
“It does not matter. You were thinking of him.” Sukuna hissed.
“Oh for the love of…!” Yuji kicked a tree and then hissed when pain roared up his leg.
“That is what you get.” Sukuna snickered.
“You motherfucker!” Yuji hissed.
“Brother?” Yuji’s head snapped up and he found Todo standing there, looking a bit like a confused puppy with his head tilted to the side.
“Todo. Umm good morning?” Yuji said, rubbing the back of his neck, embarrassed.
“Good morning! Are you training? Can I join?” Todo demanded, quickly getting over his confusion.
He was already stripping off his jacket and shirt, which told Yuji wasn’t going to get Todo to leave that easily. At the same time, having a training partner would be great. It would give him someone else to focus on. Sukuna growled at that.
“Send him away. I don’t want him here!” Sukuna demanded.
“Yeah, that would be great, actually!” Yuji said, ignoring him completely, and Todo punched his hand.
“That’s the spirit, brother!” Todo cheered and Yuji perked up.
“Right, let’s get to it!” Yuji shifted into a stance and Todo charged in.
It was almost impossible to fight Todo and listen to Sukuna at the same time. Yuji had to actively ignore Sukuna’s constant demands and commentary as the fight went on, which was not easy when Sukuna made it clear he refused to be ignored. It also didn’t help that Todo, for how big he was, was extremely light on his feet and was really tricky when it came to using his innate technique. Yuji had to focus on him with everything he had just to keep one step ahead, but Sukuna wasn’t going to make that easy.
“Come on, brother! You seem distracted!” Todo yelled.
“S-Sorry!” Yuji stumbled before jumping back into the fray.
Todo grabbed him and held him, locking his arms by his sides, holding him in place with physical strength alone and that’s when Sukuna lost it. Yuji cried out in pain as Sukuna’s rage overwhelmed his senses, causing his vision to go red and his body tense violently. Todo paused, realizing something was wrong.
“Brother?” he questioned.
“L-Let go! Quickly!” Yuji hissed.
Todo quickly released him and Yuji stumbled away, panting heavily as Sukuna attempted to force himself to the surface. Yuji curled into himself and squeezed his eyes shut. He could feel the tattoos spreading across his skin and he wasn’t about to let Sukuna take over.
“Stop! STOPSTOPSTOPSTOPSTOP! ” Yuji screamed, forcing his will over Sukuna’s rage.
The rage held strong before finally letting go and Yuji let out a long sigh.
“You will pay for that later. My dear host.” Sukuna whispered before he disappeared and Yuji let out a groan before he dropped to his knees, shaking.
He saw movement out of the corner of his eye and flinched back, but it was only Todo, who knelt beside him, eyes full of concern.
“Are you ok, brother?” Todo asked.
Yuji swallowed and gave a shaky smile.
“Y-Yeah. Sorry. Sukuna…” he trailed off as he looked away.
Todo frowned and crossed his arms.
“I’ve never seen you fight with him before.” Todo stated.
Yuji frowned and rubbed the back of his neck.
“He’s been a real pain recently.” Yuji muttered.
Sukuna seemed to snicker at that and Yuji flushed when he realized how those words could be taken. Todo hummed and sat down beside him.
“Anything you want to talk about? I have time.” Todo asked.
Yuji paused, staring at the ground. Could he admit it? Tell Todo everything Sukuna had done to him? Open up with his fellow sorcerer about what was happening to him? Would he be horrified? Disgusted? Yuji wasn’t sure. Todo could be a bit unpredictable. At the same time, Todo saw them as brothers. He would probably be the best one to keep his secret. Yuji opened his mouth to tell him, but was cut off.
“If you tell him, I will consider our contract null and void.” Sukuna replied coldly.
Yuji froze, horror filling his chest before he pushed it away. He looked at Todo and gave him a small smile.
“I’m ok. It’s just weird to have someone else living inside your body…” Yuji trailed off.
Todo frowned before jumping to his feet.
“It sounds like you need something to take your mind off it! I know the perfect thing!” Todo declared and Yuji blinked before he stood up.
“Sure. Lead the way.” Yuji replied, excitedly.
Twenty minutes later, Todo and Yuji were sitting in Todo’s room, watching an idol concert that apparently Todo knew every word and dance to. Yuji laughed as Todo tried to show him how to dance, but clearly Yuji wasn’t any good at it. They did that until dark and then Yuji returned to his own room. As he got changed, he paused, staring at himself in the mirror. For a moment, he saw Sukuna over his shoulder, holding him tightly with a wicked grin. He blinked and it was gone.
Nervously, he got into bed and closed his eyes. Before he knew it, Sukuna dragged him down.
Yuji yelped as he landed on the ground, coughing as the water splashed up against his face. Yuji went to stand up when a foot slammed into his back and he was forced back down. Yuji struggled to keep his head above the water, while trying to get Sukuna off his back at the same time.
“My poor, stupid little host. You just can’t seem to get it right, huh?” Sukuna mocked coldly.
“Get off me!” Yuji snapped before he was able to roll over and scramble away.
Sukuna stood there, eyes narrowed in rage. Yuji stared at him, feeling the nervous pit in his stomach growing. Sukuna idly tapped his chin, staring at him.
“What should I do with you? Should I tear you to pieces until you realize that you belong to me? Should I break your mind until you are little more than a cock hungry slut? Wrap you in chains as my feet for me to play with when I feel like it? Choices, choices…” Sukuna stated.
Yuji swallowed and he got to his feet, fists clenched.
“I started the contract! I agreed to be your’s so you would leave my friends alone!” Yuji demanded.
Sukuna raised an eyebrow.
“And you, several times today, you were thinking of other people.” Sukuna pointed out.
“But I was thinking about you earlier!” Yuji snapped, only to pause and flush.
Sukuna stopped, eyes changing from rage to amused and hungry.
“Oh? Tell me more.” Sukuna purred as he walked closer.
Yuji found himself backing up, but he quickly was pinned between a rib and Sukuna. Yuji bit his lip and idly played with his hoodie. Admittedly, he’d rather Sukuna not be angry at him, so maybe this would keep Sukuna calm? Worth a try.
“I was thinking about your hands. About them… touching me.” Yuji confessed.
Sukuna’s hands grabbed Yuji’s and started to pull up his hoodie. Yuji helped him pull it off. It fell away and Yuji was left exposed.
“What else?” Sukuna demanded.
Yuji blinked and then glanced at him.
“I thought about your lips… kissing me. All over.” Yuji mumbled.
Sukuna’s grin became manic as he reached up and grabbed at Yuji’s chest. Yuji sighed and pressed against the squeezing, wandering hands. It felt good.
“Go on. Tell me more. What else were you thinking of?” Sukuna cooed.
He pressed against Yuji's body, forcing his leg between Yuji’s, who whimpered and pressed against Sukuna’s thigh, enjoying the pressure on his cock.
“I-I thought about your… ah…” Yuji’s sentence was cut off when Sukuna grabbed his nipples between his fingers and started to play with them.
One hand was rough, twisting and pinching. The other was gentle, rubbing lightly with the pad of his thumb. Then they switched and Yuji whined at the painful pleasure. Sukuna jerked his leg up roughly, causing Yuji to gasp lightly and then moan as he rocked against Sukuna’s leg.
“Come on. Tell me.” Sukuna coaxed.
“I-I can’t think.” Yuji mumbled.
The pleasure going through him was short circuiting his brain. He couldn’t think beyond how good it all felt. Even the sharp pings of pain seem to add to the pleasure. Yuji threw his head back and hit it against the rib, causing a dull throb to go through his skull, but Sukuna just leaned in and nipped at his throat.
“You thought of my touches, Yuji. You thought of my cock, buried in your heat, bringing you to the peak of pleasure. You thought of me, filling you up with my seed, claiming you completely.” Sukuna whispered harshly in his ear.
“Ah yes!” Yuji yelled.
He grabbed ahold of the rib as Sukuna pressed their cocks together, still trapped in their respective pants, and started to rut against him.
“You thought of how good I made you feel. You thought about how much you wanted me buried inside you again. How desperately you wanted me to have you over and over and over again. Until all you knew was me and me alone.” Sukuna snarled.
He was wild, unhinged and Yuji could only hold on for the ride as Sukuna pressed against him almost violently, holding him up with his hands, rubbing against Yuji’s body like an animal. Yuji didn’t care though. Sukuna’s words circled in his head and he did want. He did want Sukuna inside him, claiming him in every way. He did want Sukuna buried inside him again, melting his insides and bringing him to the pleasurable hell.
“Please! Pleasepleaseplease!” Yuji begged helplessly.
Sukuna was panting in his ear, grinning with delight. He moved his lips against Yuji’s ear and chuckled, making shivers go up and down his spine.
“I own you. I am your master. Your body only knows my touch.” Sukuna whispered seductively.
Yuji choked and squeezed his eyes shut. He was so close.
“Yuji.” Sukuna cooed lovingly.
“Ah?” Yuji replied, mind blank.
“Come. Now.” Sukuna demanded.
It was like a dam burst. Yuji screamed as he came into his own pants, back arching, and his vision went white. When it was done, he slumped against the rib and watched with half lidded eyes as Sukuna cursed and came, pressing against him. Yuji felt him tremble and let go of the rib to cup the back of Sukuna’s head and stroke the hair at the base of his neck.
It was gentle, intimate in a way that was strange to them both, but Sukuna let out a sigh and pulled Yuji close, closing his eyes as the fingers stroked through his hair before he pulled back. Yuji blinked, coming out of his post sex bliss as Sukuna pulled away from him. His legs didn’t have the strength to hold him up and he slumped to the floor. There was the sound of shifting fabric and Yuji looked up to see Sukuna standing over him with his cock out.
“Clean it.” Sukuna demanded.
Yuji’s nose wiggled, but he didn’t stop Sukuna from moving closer, standing between his legs. Yuji leaned in a bit and held Sukuna’s thighs as he ran his tongue over Sukuna’s cock, slowly cleaning his cum off. Yuji found himself closing his eyes, trying to pretend it was something else. Ice cream maybe? Interesting enough, it wasn’t a bad flavor. Yuji couldn’t say he liked it, but it wasn’t bad. He fell into a doze, idly licking every inch as he fell into a rhythm.
“Enough.” Sukuna said.
Yuji blinked, confused before he realized it was completely clean and looked up at Sukuna, who smiled at him. Sukuna’s fingers were in his hair and the locks were being stroked, almost gently.
“Such an affectionate pet. Look how happy you are on your knees for me.” Sukuna cooed.
Really, Yuji should have been annoyed, or even angry, but there was something about the way Sukuna spoke that made his brain go fuzzy. He laid his head against Sukuna’s thigh and sighed.
“You feel so good like this, don’t you? You are happy as long as someone has their attention on you, huh? My attention starved pet.” Sukuna continued.
The words should have been insulting, but Yuji could admit, they did make sense. He hadn’t had a lot of friends as a child, only gaining some in high school, too busy taking care of his Grandfather. His entire life had revolved around caring for the older man, which meant he sacrificed a lot. Is that why he clung so desperately to his new friends? Because he was scared to be alone again?
His thoughts were cut short when Sukuna pulled back and Yuji blinked, waking up from whatever trance he had been in. Sukuna held out a hand and Yuji eyed it before taking it and being pulled to his feet. Sukuna pulled him against his chest and Yuji blinked sluggishly.
“I believe you have more than made up for your digressions.” Sukuna stated.
“Huh?” Yuji muttered and then he was shoved.
Yuji jerked awake and blinked, staring at the ceiling before he realized Sukuna was laughing at him and he huffed.
“Asshole.”