Chapter Text
The next morning when Peter walked out his room and saw that Derek had already left. He didn’t wait around for him to return but he did watch the door every now and again. He decided to kill time by going to the grocery store and picking up a few things for dinner. He was sure Derek would be home by the time he returned and was surprised when that was not the case.
By the afternoon, he was pissed. He encouraged Derek to give into his urges and now the boy was running from it all despite having enjoyed himself. When Derek entered the loft, Peter was sitting on the couch reading a book. It was quiet between them besides the rustling of the bag in Derek’s hand. Peter waited until Derek walked in his direction before he looked up. Under his gaze, Derek stopped immediately, and his heart rate increased as blush painted his cheeks. He tried to compose himself, but Peter had no doubt that his mind was replaying the events of last night in his head.
“Derek.”
“Peter.” Derek responded, trying to keep the same tone.
“Come here.” Peter told him and Derek was confused but he took a hesitant step forward.
“Here. On your knees.” Peter said, spreading his legs. Peter was pushing it and he knew it, but he didn’t care. He needed to test if Derek giving into his urges was something that only happened in the dead of the night. Derek stood there for a moment before he shook his head.
“No, wha-”
“Now!” Peter yelled and although he didn’t have the Alpha tone to back him up, he still had the lingering presence. Derek startled and dropped the bag that was in his hand before he walked over to Peter.
“Knees.” Peter reminded and Derek hesitantly dropped to his knees in between Peter’s legs. Peter sat up and gripped Derek by his hair and pulled slightly. Derek moaned at the action and his eyes widened at his own response.
“See, your own body knows what it likes. So why are you fighting it?”
“I’m not.” Derek responded quickly.
“Then why did you run?” Peter asked and Derek was stuck for a moment.
“I didn’t know what to do.”
“Hmm.” Peter said in response. Derek looked at his uncle and watched as the man’s eyes flickered over to the grey grocery bag he had dropped.
“What’s in the bag?” Peter asked, jutting his chin in the direction of where it laid on the floor.
“L-Lube.” Derek confessed, blush blooming on his cheeks.
“Oh.” Peter was not expecting that to be the answer. “Needed more? For what? You use it for your fingers or a dildo?”
Derek closed his eyes before he answered. “Both.”
Peter smirked at that before an idea came to mind. He could smell the arousal flowing from Derek and the Alpha’s eyes opened immediately when he heard the sound of a zipper. Peter used one hand to keep his grip on Derek’s hair while the other unzipped his pants. He wasn’t wearing any underwear as he often did, and it allowed him to easily push the garment down his hips. Derek reached up and helped him pull them down before Peter kicked them off. He didn’t hide the fact that he was rock hard, in fact, he wanted to show it off.
“Look at how hard you make me.” Peter told him and Derek hadn’t stopped looking ever since it was revealed to him. Now that he had the sun shining on him from the large loft window, Peter was able to show his nephew his prize in all its glory. Derek instinctually leaned forward with his mouth opening and gasped when Peter pulled him back.
“You want this?” Peter asked and Derek nodded.
“Then no more running. Do you understand?” Derek nodded once more, and Peter loosened his grip and allowed Derek to take him into his mouth. Peter groaned as he watched Derek go from tip to base, burying his nose in the trimmed hair there.
Watching Derek take him in the moonlight was nothing compared to watching it happen in the sunlight. With the sun, he could see much more details. The stretch of Derek’s lips around his girth, the spit glistening off him when Derek pulled back, and the eagerness in Derek’s eyes when they connected with his. He thought last night was a glorious sight, but he found himself even more amazed. He let Derek test his gag reflex a few times before he showed off that it was becoming nonexistent. He felt himself getting embarrassingly close and didn’t want things to end so quickly. He pulled Derek off him and watched as the boy sat there with his wet mouth open, waiting for further instructions.
“Lick my balls.” Peter said, slouching from his seated position on the couch. Derek eagerly licked at Peter’s balls before sucking one into his mouth. He attempted to fit both but gave up due to the size of them. He alternated between the two and Peter held onto the strands of hair he had in his grasp. Derek’s wet mouth was soaking his balls in the messiest way. The scratch of stubble on his thighs urged Peter on and he wanted more. He slouched down further and spread his legs more.
“Eat my ass, pup.” Peter said and Derek extracted himself from Peter’s balls and spread the man’s cheeks. Peter did not expect that his nephew would so enthusiastically go to town on his hole but just like everything previously, Derek surprised him with his eagerness. He wondered just how much Derek wanted this. It only took seconds for him to realize that he was being shown just how much the Alpha wanted it. Derek licked at his hole and Peter couldn’t help but apply pressure to the back of Derek’s head. The moans that Peter let out were uncontrollable when he felt Derek’s tongue push at his tight ring. After a few thrusts, he could feel himself being penetrated and he wanted more.
“Fuck, fuck, fuck. Okay, stop. Go get it.” Peter said, pulling Derek away from him. The alpha had his tongue out and a look of confusion on his face before he spoke.
“Get what?”
“The lube.” Peter told him, untangling from his hair. Derek nodded and quickly retrieved the bag off the floor. He pulled the lube out of the bag and returned to his position. He looked to Peter for permission and when he received a nod, he pushed up on the back of Peter’s thighs and returned to tongue fucking his uncle.
“Yes, oh god, Derek. I’m going to need you to use that lube and those fingers some time soon.” Peter told him and Derek thrusted his tongue in a few more times before he backed off and spread some lube on his fingers. Peter let his legs fall from their bent position slightly until he felt a wet finger at his hole. He guided Derek back to his dick as he felt the finger breach his hole. With the attention back on his dick, Peter moaned at the warm wet mouth and the feeling of being fingered.
“Another one.” He told Derek and groaned when he two fingers entered him. Derek took most of Peter in his throat and curled his fingers. Peter was not expecting that, and the combined feelings brought his orgasm on instantly.
“Fuuuck.” He groaned as he came down Derek’s throat again. The surprise of it almost made Derek choke but he eagerly began to swallow the thick load that was given to him. He let go when it became too much again and was oddly happy that not much was spilled as last night. Peter’s tight pulsating grip on Derek’s fingers made him stay still as Peter came down from his orgasm.
“Shit. Did you cum?” Peter asked and Derek looked down at his erection straining in his jeans.
“No, I-”
“Good, get the lube.” Peter interrupted and Derek nodded, reaching for the bottle. He didn’t know what to do with it but then Peter reached for his jeans and started unbuckling them. He groaned when Peter pulled his dick out for him, jerking him a few times.
“Pour some.” Peter instructed. Derek bit his lip but ultimately couldn’t hold back his moans as the lube was spread and Peter’s slick hands jerked him up and down. When Peter stopped, Derek looked at him with pleading eyes as the man sat back. The last thing he expected was for Peter to lay back on the couch and pull his legs up, presenting his hole.
“I want you to fuck me.” Peter told him and Derek was stunned for a moment before he nodded and leaned closer. He swiped his dick on the man’s hole a few times, spreading the lube and his pre-cum all over before he pushed forward. Peter groaned as he felt Derek slowly push inside of him. This wasn’t his first time being penetrated but it had been a while and Derek was no small feat. With only two fingers to prep him, he knew the burn would come but he secretly liked it, especially knowing that since it was coming from an Alpha, his body would take longer to heal.
“Fuck yeah, Derek. Give me all of it, don’t stop. Fuck you’re so thick.” Peter moaned and Derek pushed until his trimmed pubes were flush against the man’s hole. Peter controlled his breathing as he took all of Derek and groaned when he had him inside completely.
“Don’t stop.” Peter reminded him and Derek nodded before he pulled back and thrusted back in. The angle was perfect for Derek to hit Peter’s prostate immediately.
“Fuck, yeah, keep going. Give it to me.” Peter knew he usually became more vocal when he was getting fucked and he wanted some type of reciprocation from Derek. He reached up and pulled Derek down to him when he saw that he was biting his lip.
“Tell me how much you’ve wanted this. Let me hear you.” Peter told him as he used his thumb to pull Derek’s bottom lip out.
“S-So much.”
“How long?”
“For years. Never thought you’d let me fuck you.” Derek said, thrusting particularly hard.
“Fuck yeah. I’d let you fuck me if you asked. All you had to do was ask.”
“I-I thought you would want to fuck me.”
“I do but I like to be fucked every now and again.” Peter explained and Derek clenched his eyes shut at that, most likely fighting off his orgasm. Peter wouldn’t have none of that. He clenched his hole and Derek’s eyes flew open.
“I want to fuck you just as hard as you’re fucking me. I want to bury myself in your hole and paint your walls with my cum until you’re leaking with it.” Peter said and Derek moaned in his ear as his thrusts became more unstable. Peter’s eyes widened when he felt Derek’s beginning of a knot against his hole.
“P-Peter, I-”
“Do it! Knot me and fill me up.” Peter told him and Derek thrusted hard into him with his Alpha strength a few times before burying himself completely and holding Peter down. Peter groaned at the feeling of hot cum being pulsed into him as he felt Derek’s knot swell, tying them together. The constant pressure against his prostate sent Peter into his second orgasm, covering his chest, stomach, and shirt in cum. Peter grabbed Derek by his face and pulled him in for a kiss that quickly turned into a make out session with their tongues caressing. There was no battle for dominance because Derek immediately surrendered when Peter pressed against him. Derek moaned and Peter felt him throb inside of him, surely pulsating more cum in his already full hole. When the need for air became too much, Derek broke their kiss and collapsed further onto Peter.
Normally, Peter would complain but it had been a while since he was in this position, and he allowed his nephew to catch his breath. Derek panted against his neck, and he returned the gesture before licking along what was offered to him. Derek tilted his head and offered more, groaning when Peter sucked on the spot he was creating.
Of course, with him being an Alpha, any spots or attempted spots were fully healed seconds later. That didn’t stop Peter from having his fun while they waited for Derek’s knot to deflate. Derek leaned back when the teasing became too much and he felt himself stirring up again. Peter looked offended when Derek pulled away and Derek offered him an apologetic smile.
“It was turning me on.”
“Good.” Peter told him before he looked down at myself. “Look at this mess.” Derek eyed his uncle’s fingers as they moved through the cum that was on his chest. Peter caught on quickly and gathered some on his fingers.
“Open.” He told Derek and the Alpha took it a step further and pulled Peter’s fingers to his tongue. Derek groaned at the taste and eagerly cleaned the fingers offered to him as he felt Peter clinch against his knot. Immediately, Derek came a second time, sucking hard on the fingers in his mouth. His hips twitched a few times in the aftershocks of his second orgasm before he felt Peter pull his fingers from his mouth.
“You’re such a slut for me. I knew you were. It was only a matter of time.” Peter said and Derek blushed furiously.
“I’m not the only slut.” Derek responded, thrusting his hips forward. It knocked a moan out of Peter, and he glared at his nephew before pulling him down so that they were face to face.
“You’re right but don’t think I won’t flip you over and fuck you against this coffee table until it breaks.” Peter told him before connecting their lips.
“I don’t think I can cum anymore.” Derek confessed when they pulled apart and Peter nodded in agreement. They were in the position for some time and Peter kissed on Derek’s neck for a few more minutes before Derek’s knot started to deflate. Peter wrapped his legs around Derek and held him close while he whispered in his ear.
“Next time you feel the urge, just ask and I’ll be happy to oblige.” Peter told him and Derek nodded before slowly extracting himself. Peter groaned at the feeling and immediately clenched to try and keep the cum inside of him as Derek gathered his clothes. Peter took a moment to bask in the feeling of the bruises and the stubble burn on his thighs and ass before heading to his room to shower.