so mycroft and greg are married and they have a kid and john and sherlock haven't met until john is watching the tiny child and sherlock comes to pick the tiny child up and john is the fun uncle (funcle) and sherlock doesn't like john, but warms up to him

john was picking up his "niece" today from daycare while greg was working on a case and mycroft was doing what ever he did. he stood outside the posh school while he watched for his niece, smiling when he saw the auburn haired girl, run up to him.

"uncle john!" the small girl said happily, running up to john.

john smiled and picked the girl up, making he squeal. "how's the most beautiful princess in the world today?" john asked the girl.

"wonderful!" the girl exclaimed, throwing her hands into the air.

john chuckled and set the girl down, holding onto her tiny hand. "how about some ice cream, yeah?" john asked and looked down at the girl. 

"but daddy says no ice cream." sohpia said and looked up at her uncle.

"well your father isn't here to stop us, is he?"

sophia shook her head, smiling.

"then lets go!" john smiled and took the small bookbag from the girl, starting to walk to ice cream parlor.

when they got there, john picked the auburn up so she could look at all the flavors and she chose what her uncle got, mint chocolate chip. after they got their ice cream, john held both the small bowls as they walked quickly to the park. sophia sat on the bench and ate her ice cream for a short while before she ran off to the playset. john sat and watched her while he ate his ice cream. sophia ran over every few minutes to get a bite of ice cream before running back onto the playset. john finished his ice cream and ate a bit of his neices because she wasn't even close to finishing and he was just helping her out. he watched her slide down the slide then something caught her eye and she started running in the opposite direction of john. john got up quickly and started chasing after her.

"sophia!" he shouted as he chased after her niece.

"uncle sherwock!" she smiled, running up to a tall man in a trench coat.

the man smiled down at the girl amd picked her up, kissing her cheek. "what're you doing here?" he asked in a playful voice, tickling the girls stomach.

sophia giggled. "i'm here with uncle john!" she smiled, pointing over to john.

the man looked over at john and john caught the first glimpse of his defined cheek bones and those peircing eyes that stared him down. "i'm john," john said with a smirk, sticking his hand out for the man to shake.

the man set sophia down and shook john's hand. "sherlock holmes," his baritone voice replied. "what are you in relation to my brother and his husband?" he asked.

"i'm greg's best mate. i was the best man at their wedding." john replied.

"wouldn't know." sherlock responded sharply. "weddings aren't my thing." sherlock looked down at his niece who was tugging on his coat sleeve. "why are you sticky?" he asked as he took sophia's hands off of his.

"uncle john and i had ice cream!" she said with a huge grin in her face.

sherlock looked up at john, glaring at him. "she's not allowed sweets." he said.

"oh relax, it was just a little bit. we get ice cream every time i pick her up, then we come here and she runs the engergy out of herself." john said. sherlock had a look on his face that wasn't amused and john grinned. "see, watch." he said then crouched down to sophia. "ready to play knights?" he asked.

sophia nodded excidetly. "you better catch me!" she shouted as she ran off to the play structure.

john stood up and smiled at sherlock. "she'll be out in no less than twenty minutes." he said then turned around, running in the direction of the small girl that was climbing up the steps to the slide. 

when john got to mycroft's and greg's to drop sophia off, mycroft, greg, and sherlock were all waiting for him. sherlock took the sleeping girl from his arms and took her upstairs, leaving him with greg and mycroft.

"you know she can't have sweets, john." mycroft said. "she has hyperactivity and you know this."

"i'm just trying to have fun with her." john defended. "her childhood isn't going to be fun if she's supposed to do everything by the book."

"we also said no going to the park." mycroft said.

john rolled his eyes. "there's nothing wrong with the park."

"it's unsanitary and she could get hurt." mycroft replied swiftly.

"i'm a doctor, i know how to handle a injured child." john said. "aren't you going to back me up, greg?" he asked, looking at his friend on the sofa behind his husband.

"i'm with myc." greg said.

john sighed and pinched the bridge of his nose. "of course you are." he looked at the couple. "so what's my punishment this time?" he asked, shoving his hands into his pockets as he rolled onto his heels.

"you will be babysitting still, but you will come here right after you pick sophia up." mycroft said. "there will be no sweets and she will be allowed to have a snack, but that is until greg or i come home. got it?"

"yes sir." john said in a sarcastic tone, getting a disapproving look from mycroft. "i'll see you tomorrow then." he waved at the two then walked out of the house. he sighed before starting his walk back home.

the next day john stood outside the posh school, waiting for his niece to come out. he thought about going bechind mycroft's back, but mycroft probably had survailence on him as he just stood waiting. when he saw the tiny auburn running towards him, he smiled brightly and crouched down to catch the girl. "how is the most brave knight doing today?" he asked.

sophia smiled. "wonderful!" she exclaimed.

john laughed and set her on the ground, holding onto her small hand. he started to walk in the opposite direction of the ice cream parlor and park and sophia wasn't having it.

"where are we going?" sophia asked, looking up at her uncle.

"we're going home." john stated, glancing down at his niece while he walked.

"but i wanna go to the park!" she said, her face getting ready to throw a tantrum.

"we can't, love. i'm sorry."

"but i want to!" sophia shouted.

john sighed and stopped walking, crouching down to his niece. "we can't your dad said no."

"but daddy doesn't have to know!" she said, quoting her uncle.

"but he will know because your father is a very powerful man." john said and stood up. "come on now, we have to go home."

"no!" sophia scream, starting her tantrum.

john sighed and picked the girl up, but she started to smack and hit him. he set the child on the ground and held her still. "when we get home we can have ice cream, how does that sound? and we can play what ever you want to."

sophia sniffled and pushed her hair out of her face. "even princesses?"

john smiled, nodding, "we can even have a tea party."

she lifted her arms, implying she wanted to be carried, so john picked her up, not wanting to deal with her throwing another fit. he carried her the rest of the way to the posh house that she lived in, setting her down once they were inside. she giggled and ran in the direction of the kitchen, john following her.

"alright miss sophia." john said as he lifted his niece and set her on the counter. "let's see if there's any ice cream."

she smiled and watched her unlce open the freezer. "is there any?" she asked excidetly.

john ignored the tub of ice cream and frowned. "none." he said and closed the door, turning back to his niece. "is there any thing you want?"

she hummed, looking around the marble kitchen. "fruit snacks!" she exclaimed, pointing to the pantry.

john laughed and went over to the pantry, opening it and taking out two packages of the fruit snacks from the box. he opened one and gave it to sophia, watching her light up and stick her tiny hand into the package.

sherlock appeared in the door way, unnoticed, staring at the two. "why is she on the counter?" he asked as he went over to his niece. "she could fall off." he picked his niece up and set her on the floor.

"she was fine." john said. "i was watching her." he looked up at the tall man.

sherlock rolled his eyes and looked down at sophia when she tugged on his coat. "what?" he asked her.

she held out her hand, something in it, as she giggled. "for you!"

sherlock held his hand out for the girl and she put the empty fruit snack package in his enourmous hand.

"uncle john tought me that!" she laughed, proud of her self.

"of course he did." sherlock muttered as he went to throw the trash away.

"sherlock, do you know the time?" john asked.

sherlock looked down at his watch and spoke, "a quarter after four."

"i think he's wrong." john said.

sherlock furrowed his brows and stared at the short man.

"do you know what time it is sophia?" he asked the small girl in a posh accent.

she grin and shouted, "tea time!"

john chuckled. "that's right it's tea time!" he exclaimed, picking up his niece. "come on sherlock!" he shouted as he ran out of the kitchen and up the stairs.

the three sat at the small pink table in sophia's room with tiras and boas on and she made a special request that her uncle sherlock wore the tutu, so he did. john was trying his best not to laugh at sherlock because he was not having it. he smiled and played with sophia, but when she wasn't looking, sherlock's smile dropped and it looked like he wanted to kill everyone and everything.

"would you like more tea uncle sherwock?" sophia asked, holding up the plastic purple tea kettle.

sherlock shook his head. "i still have to finish this cup princess sohpia." he said and gave her a timid smile, pretending to drink out of a plastic tea cup.

"uncle john?" she aksed.

"i would love more tea!" he said playfully, sticking his tea cup out for more.

sophia poured her fake tea into john's plastic cup and watched him take a fake sip out of it.

"isn't this the best tea ever, uncle sherwock?" john asked with a grin, knowing that when he called the detective that it pissed him off.

"it's lovely john." sherlock said back, forcing a smile. "maybe you should shut your mouth with those delicous cookies."

john smiled back at him, but it turned into a frown when he looked down at his phone.

"what's wrong?" sophia asked.

john stood up and took the tira and boa off. "you've got her?" he asked sherlock, egaer to leave.

sherlock nodded. "yeah, yeah. go."

john kissed sophia's head before sprinting out of the girl's room and out of the house compeltly.

the next day john had to take a rain check on picking sophia up from daycare, so sherlock had to. he said he'd be able to the next day, but sherlock didn't trust him so he still showed up at the school.

"what're you doing here?" john asked sherlock, not bothing to look at him.

"i'm just making sure you were able to pick sophia up." sherlock said and stared at the school with him.

"are you sure it's not because you think i'm a bad uncle?" john asked as he looked up at the tall brunette.

sherlock looked down at john, gaining eye contact. "i don't think you're a bad uncle."

"yes you do."

sherlock sighed. "fine, yes. i think you're a bad uncle." he said and looked at the school again.

"i knew it." john said. "your brother doesn't trust me either." he stated.

"well tuesday probably wasn't the first day you ran out on her. a girlfriend that texted you i pressume?"

john huffed out a laugh and pursed his lips. "i'm a tramua surgeon. there was an accident and they needed me to come in."

sherlock looked down at the small, blond man. "was it that bus that lost control and ran into other cars?" he asked.

john nodded.

sherlock bowed his head, staring at his feet. "i'm sorry. i didn't know."

"it's fine," john shrugged. "i'm just a bad uncle any ways, letting sophia do what ever she wants."

"i never said that." sherlock stated, looking at the blond man who was staring at him.

"but you were thinking it. the great sherlock holmes who can deduce people from a single stare. you probably thought i was a drunk when we met at the park the other day because i smelt of alcohol, didn't you?"

sherlock nodded. "but you aren't."

"you're right. a patient threw up on me that was drunk, but i didn't want to be late picking sophia up."

sherlock frowned and read john. "you're not a drunk, but you go out for drinks every saturday night with greg. you work the night shift going by bags under your eyes and the fact that you're slouching when you normally have good posture. you keep yourself clean. a hair cut every week and no wrinkles in your clothes so i say ex military?" he asked.

john nodded, amazed. "i do work the night shift and i just recently got back from afganistan."

"knew it," sherlock grinned.

there was silnce between the two as they waited for their niece before out of no where john asked, "would you like to get dinner sometime?"

sherlock snapped his head at john and watched him carefully. "what?"

"well not dinner," john chuckled. "but something other like lunch."

"why?" sherlock asked, trying to process what the small man was trying to say.

"a date." john said, amused that sherlock didn't understand. "would you like to go on a date with me?"

before sherlock could answer, sophia came running up to the two. "uncle john!" she said happily.

john crouched down and picked the girl up, kissing her cheek. "hello!" he said enthusastically.

"you didn't pick me up yesterday." she said.

"i know, i was caught up in work. sorry." he apologized. "but i'm here now and we can do anything you want to."

"can we go to the park?" she asked hopefully.

john looked at sherlock. "dependes if uncle sherlock will tell."

"my lips are sealed." sherlock said, smiling.

"then let's go!" john exclaimed, setting  the the girl on the ground.

sophia smiled and ran in front of sherlock and john as they started to walk.

"yes." sherlock said.

"sorry, what?" john asked.

"yes, i'll go on a date with you." sherlock said.

john smiled. "we can go some where after we finish babysitting?" he suggested.

"sounds good," sherlock smiled.