Chapter Text
Later that night when he was sure their parents were asleep, Mycroft stormed into his brother’s bedroom.
“What the hell was that all about? Do you know how easily we could’ve been discovered?”
“Then don’t force me to take risks, fuck me now when it’s safe to do so.”
“We’ve been over this.”
“Yes, and you wished to chalk it down to an innocent mistake but I refuse to see it that way. I think I got the best possible outcome at the other side of that cubicle and I want more.”
“I am your brother, Sherlock.”
“I’m more than aware and frankly a little bored with your point. “
“Yet the point remains and always shall. You shall always be my brother and several years younger.”
“And desperate for your cock.”
“Sherlock, stop this. For our sanity you must stop.”
“For our sanity, brother, you must cave.”
Mycroft shook his head, clearly his brother wasn’t listening to him, there was no point in arguing.
“This will stop.” Mycroft snapped as he quickly left the room.
Sherlock refused to let this go into another few days of silence before confronting him again. He gave his brother a moment to calm down before following him to his bedroom.
“Do you want me?” He asked in a small voice as he crept into Mycroft’s room and found him sitting on his bed.
“More than I should.” Came his simple, honest reply.
“I’m the local freak. With my brain and the way I act…nobody understands me, except you. I’ve been thinking about this Myc and I think we would’ve ended up here one way or another. Why wouldn’t I fall for the one person who understands me?” Sherlock sheepishly made his way to join Mycroft on the bed. “Why wouldn’t I want my first time to be with the only man I trust?”
“You’re not a freak, Lockie. You are an amazing boy and you are going to be a great man. I am lucky to be your brother as I’ll be with you for it all.” Mycroft paused, “I don’t want you to loathe me because of our actions and giving in to lust.”
“Myc, do you actually think I would be practically begging you for this if I hadn’t thought of each outcome beforehand? I know what it could do to our relationship or our family if it became public knowledge. I also know how much I want you and I believe you feel the same. Have you for one moment thought how we might be a perfect fit for each other?”
“Of course I’ve considered it. Very few match my intellect, fewer still would I wish to spend time with. But the negative outweighs the positives here. There is too much to lose.”
Sherlock scoffed at his brother, “You’re scared of what you’ll gain.”
“Perhaps. Though such worry is natural when wanting something you can’t have.”
“But you can have me, Myc.”
“In a sexual sense, I am aware. But we both have the intelligence to know that this could go beyond sexual.”
“And who better for you to fall in love with than me?”
“Ever cocky, little one.” Mycroft chuckled.
“Yes, but also serious. All the qualities I possess make me the perfect match for you.”
“If we exclude your genetics.”
Sherlock rolled his eyes, “Meer semantics.”
“You don’t intend to give up this fight, do you?”
“Not until I have what I want.”
Sherlock leaned into Mycroft and placed a chaste kiss on his lips. As he lingered, letting his breath ghost on his brother’s lips, he smirked ever so slightly, knowing Mycroft would crack, he wanted to crack, it was obvious but the elder sibling had too many rules to follow his lust.
“I can be yours.” Sherlock whispered before kissing Mycroft again.
Slowly Mycroft began to kiss back, his resolve weakening. The kiss became heated, two set of lips locked in battle as Mycroft caved to his desires. Their tongues explored each other’s mouths and when the kiss broke Mycroft moved his mouth straight to Sherlock’s neck. He kissed and sucked the sensitive spots, nipping lightly over his pulse point, working his way to Sherlock’s ear where he hungrily whispered, “Mine.”
The simple word uttered by his brother had an extreme reaction and Sherlock’s cock began to stir to life. Being Mycroft’s was safe, familiar and yet new and exciting. He couldn’t work out how he’d never known it before but he was always Mycroft’s and his brother was the only one he wanted to take his virginity.
Sherlock let out a small gasp as Mycroft moved his lips along the teenagers collarbone, sucking a bruise to match his own barely faded mark Sherlock had given him. He smiled at the result and promised Sherlock many more would litter his body as he was claimed.
The kisses became heated and Sherlock pushed his brother down on the bed and straddled his waist, not breaking their lip contact unless absolutely necessary. They were delicious kisses and their hunger for each other showed in them. Each time they moved to another area of exposed skin they quickly came back to capture each other’s mouths again.
Mycroft pawed at Sherlock’s clothes and the younger sibling sat back up and removed his top in order to help his brother gain access to his chest. Sherlock dipped back down to resume kissing, hand working on the buttons of Mycroft’s shirt.
With each inch of skin exposed, the brother’s looked at each other as if it were the first time again. Sherlock made a plan to kiss every one of Mycroft’s freckles one day, it would be a challenge but he adored each tiny brown mark. Mycroft was in awe of Sherlock’s pale skin, it seemed so pure and reminded him just what prize he was getting here.
Sherlock began undoing Mycroft’s trousers and frustration took over. He clambered off Mycroft and stood up, pulling his brother’s trousers and underwear off before ridding his own and straddling him again.
His hips ground against Mycroft’s. Both men were erect and desperate for each other. Sherlock reluctantly broke the kiss and moved his body down the bed until his mouth reached Mycroft’s cock.
The teenager took hold of the long, beautiful prick and began stroking lightly as his tongue teased the head of the cock. Mycroft couldn’t help but let out a moan as he watched the sight below his waist. His little brother’s red, swollen and delicious lips stretching around his cock, moving down his shaft and taking more of him with each movement. Finally he got to see what was on the other side of that cubicle and he knew anonymity could never compare to this.
He carded a hand through his brothers messy ebony curls and encouraged him to take more of his length. Watching him gag should’ve concerned him but it only served to turn him on further, as did Sherlock’s determination.
Reaching over to his bedside table, Mycroft removed a bottle of lubricant from the top drawer along with a condom. Pulling Sherlock’s hair slightly, he encouraged his brother to raise his head and look at him.
“We don’t have to do everything tonight if you’re not ready.” His voice was smooth and caring.
Sherlock looked up at him, his warm eyes sparkling back down. He grabbed the condom from the bed and threw it across the room.
“I want you, I want to feel you completely, I want you to come inside me. You offered a condom back there, therefore I assume you have been cautious before. This is my first time, Myc and I want to feel it all.”
Mycroft opened his mouth to protest but the throbbing of his cock was a clear indicator of how he approved of Sherlock’s wishes. The boy was right, Mycroft had never gone without a condom before but he couldn’t wait to try it without one with the only sexual partner he could trust.
Mycroft attempted to wriggle from beneath Sherlock but he kept him in place and continued to suck and tease his cock.
“If you stay down there until I ejaculate then how am I to fuck you, brother?”
Sherlock didn’t reply, he simply shifted his body and scooted himself into a sixty-nine position with his brother.
Mycroft shook his head at Sherlock’s reluctance to do anything other than his own wishes and grabbed the bottle of lube from the bed. He thought twice and quickly set it down, favouring instead to spread his brother’s ass cheeks and begin to tease his virgin hole with his tongue.
Sherlock jumped at the first contact, it was completely unexpected. As Mycroft continued to tease the muscle and push his tongue inside, Sherlock moaned around the hard cock in his mouth. The younger brother’s body shook slightly with pleasure and his moans became more frequent, vibrating Mycroft’s shaft with each one.
While Sherlock was in a state of bliss, Mycroft took the lubricant again, slicked his fingers and began pushing the first inside.
A gasp came from Sherlock as Mycroft’s digit pressed further inside. He was just as tight as the first time, clearly a virgin but the way he began rocking on his brother’s finger showed how much he wanted it.
When Mycroft judged it best, he added the second finger and Sherlock’s gasp this time seemed painful. Mycroft added more lube and pushed slower inside, quickly locating the prostate in a want to give his brother pleasure rather than the painful stretch.
When the little bundle of nerves was hit, Sherlock jerked forward.
“What the hell was that?”
“Basic anatomy, Lockie, or do you require a biology lesson.”
Sherlock snapped, “Shut up and do it again.”
Mycroft obliged and grazed the prostate once more. The moan from Sherlock was wanton, delicious and rather filthy.
Increasing the speed of his fingers, Mycroft used his free hand to stroke Sherlock’s cock to distract him as he forced the tip of the third inside. Sherlock hissed but soon began rocking back on the fingers, wanting his prostate hit again.
Mycroft attempted not to hit it each time, he wanted to be inside his brother, even if it didn’t last long for the teenage virgin.
“I want your cock. Myc, please, please, give me your cock.” Sherlock begged.
Mycroft chuckled, “All these years and the key to get a please from you was to fuck you. If only I’d known.”
Slowly he removed his fingers and told Sherlock to lie on the bed. Mycroft positioned himself between his brother’s legs and rested one of them on his shoulder.
“Are you sure, Lockie?”
“Shut up and fuck me.” He said it with a smile and pulled Mycroft in for another kiss.
Mycroft took the lubricant bottle and slicked himself up, rather generously.
“This will likely hurt but I will be as gentle as I can and will stop anytime you need me to.”
Sherlock nodded but his eyes were impatient. Mycroft lined himself up and very slowly pushed the head of his cock against his brother’s entrance.
There was a painful squeak from Sherlock as his muscle stretched around his brother’s erection. Mycroft kept the pace slow and sunk deeper inside.
It had been a long time since he had lost his own virginity and he was unsure what to do to make it the least painful but he figured slow and steady, giving Sherlock plenty of time to adjust.
Once Mycroft was fully seated in Sherlock, he paused. Sherlock winced with the pain and Mycroft stroked his cock a few times to offer more distractions. Eventually Sherlock gave him a small nod and Mycroft began to move. His trusts were barely noticeable at first but with each one Sherlock’s fists unfurled from the sheets. When Mycroft’s cock nudged his prostate he grabbed them again and moaned in approval.
“That’s good. Very good. More like that.”
Mycroft tried his best to oblige and shifted his angle slightly in order to tease the prostate with every stroke. His trusts began to become faster and the noise of skin slapping skin filled the room.
Kissing his calf for reassurance, Mycroft kept close watch on Sherlock to ensure he wasn’t in pain. It was a beautiful sight the way his hair was damp with sweat and his mouth fell open in little ‘O’ shaped with each trust.
Mycroft’s speed increased again and pleasure began taking over the teenager. His cock throbbed in search of friction and he stroked himself as Mycroft pumped into him.
The sensations became too much and the virgin felt his body tingle and heat begin to pool in his stomach. His mind began to blank and he felt a strange sensation all the way from his toes to his fingertips. He closed his eyes, threw his head back and moaned as the pleasure washed over him.
He silently mouthed his brother’s name as he came, hot white streaks of cum covering his stomach.
Mycroft groaned at the depraved sight before him. His brother was completely undone, body beginning to go limp and covered in his own come. The tightening of Sherlock’s already impossibly tight ass had Mycroft almost at the edge and a few more thrusts left him unloading himself inside his little brother.
Both men struggled to catch their breaths. Mycroft pulled slowly out of Sherlock and collapsed on the bed beside him. The younger Holmes smiling as he felt the strange sensation of his brother’s come dripping from his freshly abused hole.
Neither brother knew who moved first to take the others hand but as they lay in silence their fingers were intertwined.
“I’m glad, you know.” Sherlock muttered and broke the silence. “That we didn’t go through with it at the glory hole. Glad it wasn’t some stranger either.”
“I’m privileged you chose me for your first. I do hope it wasn’t too painful.”
“A little, I’m sure it’ll hurt to sit tomorrow, but definitely worth it.”
Mycroft reluctantly left the bed and went into his en-suite for a damp cloth to clean Sherlock of their releases. Each time he moved over Sherlock’s skin he was gentle and caring. He tossed the flannel aside and got back into bed, wrapping a cover around them and lifting his alarm clock from the table.
“I am setting this in case we fall asleep, we can’t risk getting caught.”
“Should I go now?” Sherlock’s voice was small, it was the last thing in the world he wanted to do. A smile covered his face as he felt Mycroft’s arm around him, pulling him close.
“Don’t you dare, Lockie. I’d never let you leave if I didn’t have to.” Mycroft kissed his brother’s cheek and held him tightly.
“I’m yours now, Myc…if you want me. Only place I’ll be is a few rooms down the hall.”
Mycroft didn’t pause, he practically cut Sherlock off, there was no use denying now, “Of course I want you. We have a lot to work out about this, I’m aware, but I do know I want you.”
“Of course you do,” Sherlock yawned, “Why wouldn’t you.” He gave Mycroft a sleepy smile and a kiss.
The Holmes brother’s lay in each other’s arms and fell asleep until the alarm went off to warn them to separate. When Sherlock returned to his own bed he lay thinking of his brother, of how beautiful and truly wonderful he was. He thought of the problems ahead that faced them and how to use Mycroft’s girlfriend as an alibi for time together. He thought about their future and what it would be, just brothers, simply lovers when opportunity arose, or partners, spending their lives together by each other’s side?
Sherlock sighed into the darkness of his room, closing his eyes to go back to sleep and missing the warmth from Mycroft’s arms. He knew in that moment what it was he wanted, he wanted to spend his life as all three, Mycroft’s brother, his lover and his partner.