Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/12651300.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      F/F, F/M, Multi
  Fandom:
      Original_Work
  Additional Tags:
      Extremely_Underage, First_Time, Oral_Sex, Anal_Sex, Vaginal_Sex, Multiple
      Orgasms, Forced_Orgasm, Threesome_-_F/F/M, Anal_Fisting, Vaginal_Fisting,
      Rimming, POV_First_Person
  Stats:
      Published: 2017-11-06 Words: 2458
****** Promised Fun ******
by MrTwilight
Summary
     after waking up in her mom's car, a girl walks into her house, then
     has trips over her sister's Jacket. After checking her of wounds, The
     girl demands her to promise to not forget about her when she is about
     to have some fun like she always forgets, then the girl falls asleep
     and wakes up to her sister. Whens she go to investigate she spots her
     sister having fun without her and reminds her sister of her promise
     and joins in on the fun,
“Wake up sweetie.” My mom said.
I opened my eyes as I stretched and saw I was in my mom’s car still, then I
looked around as saw we were home.
“Tell your sister that I have to take a double shift so I won't be here until
late tomorrow night.” My mom said. “Please don't drive her up the walls.”
I nodded, then yawned.
“Sorry for taking you to my boring errands.” My mom said as she unlocked the
door.
I unbuckled my seat belt and got out of the car, then walked to my house. I
yawned as I started to walked to my room while I rubbed my eyes, then I felt
something grab my foot and take me down, making me smash through the coffee
table. I moaned in pain as I heard my sister come running into the room.
“Oh my God are you okay?” My sister cried as she came into view.
I looked at what tripped me and saw my sister’s jacket.
“I’m so sorry for not watching where I placed that.” My sister cried as she
checked me for wounds.
“I’m fine.” I said. “I’m just sore.”
My sister grabbed me as she looked me over, then sighed in relief as she hugged
me.
“I’ll be more vigilant next time.” My sister said. “Where’s mom?”
“She’s taking a double shift.” I said.
“Okay.” My sister said as she nodded. “Are you hungry?”
I nodded and she took me into the kitchen, then she opened the fridge and
looked at me. I looked in and pointed to the chicken leg quarter.
“I’m so glad you love leftovers because I don't.” My sister said as she grabbed
the plate.
My sister put me on the counter and opened the microwave as I pressed the
reheat meal button, then my sister closed the door as I pressed the start
button.
“Do you have plans today?” I asked. “If you do I want in on it. There is no way
you going to leave me out of any fun this time.”
My sister giggled.
“We’ll see, I plan on the way.” My sister said. “Mom’s absence opens up some
more possibilities for us.”
I nodded and looked at the microwave as I heard popping, making me open the
door. I saw the chicken was steaming, making me press clear and grabbed the
plate.
“Can I have some of your orange juice.” My sister asked.
“Sure.” I said. “Pour me some too please.”
My sister nodded and grabbed two glasses as she looked at my arm, then gasp as
she set the glasses down, making me look at my arm and saw a huge bruise
forming.
“I'm fine, I don't feel it anymore.” I said.
“I’m sorry, but you know me.” My sister said as she lifted my shirt, then
sighed in frustration.
“Damn it, I hope people don't think you're getting abused.” My sister whined.
“How would they know if it’s covered?” I asked.
“You have a point.” My sister said as I started to eat, then she filled a glass
and gave it to me. “Thank you for sharing.”
“You would do the same for me.” I said. “Just please don't forget about me when
you go somewhere. I hate being home alone.”
“Technically, I’m not supposed to leave you alone.” My sister said. “Mom’s
orders.”
“In that case if you leave me I’m telling mom.” I said with a smile.
“I know you will.” My sister said with a sigh, making my smile fade. “No don't
be worried, you should tell mom if I neglect to take care of you."
“I can take care of myself.” I said. “I’m not seven anymore.”
“Sorry, mom won't allow you to take care of yourself until your thirteen.” My
sister said.
“Mom’s rules suck.” I grumbled, making my sister giggle.
“Yes I agree.” My sister said, then picked me up once she saw me finished with
my food. “What do you want to do?”
“Sleep with you.” I said.
My sister nodded and walked to our room, then laid me down as she laid down
next to me. I wrapped my arms around her as she kissed me.
“Promise me you let me join in your next fun.” I said.
“I promise.” My sister said.
I closed my eyes and fell asleep. I woke up from my sister moaning, making me
look around and saw I was in the living room, then I saw the table was cleaned
up. I stood up and walked to my room and saw my sister having sex with Tom, her
boyfriend. I smiled as I walked to them and grabbed Tom’s balls.
“Jeez your hands are soft today.” Tom moaned. “Rub them please.”
I grinned and started to rub them.
“What are you talking about?” My sister asked.
Tom look back and stared at me in shock.
“Can I join?” I asked as my sister looked at me.
Tom’s face filled with nervousness as he looked at my sister as she looked at
me in disbelief.
“Of course I can, you did promise your next fun.” I said with a smile.
“You gotta be kidding me.” My sister whined. “Please don't play that card on
me.”
I stared at her, then she sighed and looked at Tom. Tom opened his mouth to
speak, then he sighed as he stared at her with an overwhelmed expression.
“Can I owe you double?” My sister asked.
“No.” I said. “I don't like it when you do tabs, you take forever to pay them.”
My sister face filled with worry as she looked at Tom.
“I can’t change her mind if she responds like that and she will force herself
on us if I break my promise.” My sister said. “She’s real stubborn like that.”
Tom stared at her in fear.
“Will she tell on us if I refuse?” Tom asked.
“Most likely.” My sister said.
Tom sighed and bit his lower lip.
“Fuck.” Tom said. “I mean shoot.”
“She knows all the bad words.” My sister said. “She also knows quite a bit
about sex since she watches our parents do it all the time and enjoys watching
it. She even masturbates to them in the open.”
Tom sighed and looked at me, then reached out to me. I walk to him and he
pulled me to him, then started to undress me as he stared at me in the eyes
with nervousness. Once my clothes were off, he looked at my sister and she
nodded. Tom pulls his cock out of her, then my sister grabbed me and pulls me
to her chest. Tom stared at me as I grabbed his cock and started to stroke it,
making tom let out a moan as disbelief filled his face.
“Holy shit that touch is divine.” Tom moaned, making me smile as he moved
closer.
“What do you want me to do?” Tom asked my sister.
“Everything you planned and did to me today.” My sister said.
Tom face filled with worry, then he sighed as he nodded and put his cock to my
mouth. I started sucking it, making him stare at me in shock as I took half of
it before he touch my throat.
“Is my cock that small?” Tom whined.
“No, that's her big ass mouth.” My sister said, making me giggle. “She can fit
a whole damn orange In her mouth.”
I grabbed my sister’s hand and put it on Tom’s balls. My sister rolled them
around, them I reached into my sister slit, making her yelp out.
“Is she fisting me?” My sister yelped.
Tom looked down and nodded as he stared in shock. As I moved my hand around Tom
started to thrust into my mouth as he started to moan.
“Are you going to cum?” My sister asked.
Tom nodded, making my sister whine.
“Come on, I want that in me.” My sister whined, making me pull my mouth off
Tom.
“Then the first load is yours.” I said and pulled out my hand. “I’m fair and
want you to have fun too, that why I was fisting you.”
Tom smiled and penetrated my sister, then he started to fuck her, as I reached
around and put my hand in his ass, making him yelp out, then moan as he push
deep in my sister.
“Damn what a load.” My sister moaned as I felt Tom's ass mussels clamp around
my hand in pulses. “What did she do?”
“She fist me.” Tom said. “I can’t believe I liked that.”
I started to move my hand around, making Tom moan in pleasure as he fell flat
on my sister.
“She is not a normal child is she?” Tom moaned.
“I'm starting to wonder myself.” My sister said. “My parents don't do that.”
I nodded.
“They do?” My sister asked in disbelief.
“A few times.” I said. “I won't do it like they did since I fear I might hurt
you if I yank my hand out like dad did to mom.”
I felt Tom grabbed my arm and pulled me out of him.
“My turn to pleasure you.” Tom said, then he moved his mouth to my slit and
started to lick me.
I gasped and grabbed his head and pushed him down harder.
“She must have learn that from you.” Tom said.
“Yes I watched you guys have sex several times too.” I said.
“We didn't do it that much.” My sister said as I let out a moan as Tom pushed
his tongue in me.
“You guys did it five time that's I saw.” I moaned.
“I think that’s almost every time.” My sister said with a sigh.
Tom grabbed me and flipped me over, then started to lick my backdoor, making me
giggle as it tickled, then I gasped as he push his tongue in. I looked at my
sister’s C size breasts and started to suck a nipple, making my sister moan.
“God, I’m ashamed to say this but I wish to do this more often little sis,” My
sister moaned.
“Anytime.” I moaned. “Whatever he’s doing feels amazing,”
“I know.” My sister moaned.
“Please tell me to stop if it hurts to much.” Tom said.
My sister looked at me in worry as I felt his cock touch my backdoor, then he
slowly pushed in, making me hold my breath as the pain was great. I felt him
stop a few seconds later and I released my breath slowly.
“Holy shit, she took the whole thing.” Tom yelped.
“Is she bleeding?” My sister asked as Tom started to fuck me.
“A little.” Tom said
I close my eyes as I started to moan uncontrollably. A few minutes later, I
felt Tom start to pick up speed, making me moan louder, then I felt several
gushes shoot in me.
“I can’t believe I just came in a ten year old.” Tom whined as he pulled out of
me.
My sister picked me up and looked at me in worry, then she turned me around and
spread my cheeks.
“I think she’s fine.” My sister said as i felt her push her finger in my
backdoor. “She’s a little loose, but it closing up and holding your cum in.
My sister set me down and I crawled down to her slit, then started to lick her
clit as I put my hand deep in her, making her gasp. I pushed my hand all the
way to her back wall, making her let out a screaming moan.
“Oh good spot.” My sister moaned. “Please don’t stop.”
A few seconds of rubbing her back wall, my sister started to scream, making Tom
giggle.
“Damn girl I never heard her scream like that.” Tom said.
“You want to drink me now is the time.” My sister moan.
“No, your first load belongs to your boyfriend." I said as I looked to him.
Tom smiled and got over to her slit as my sister started to get louder, then I
pulled out as Tom took over. A second later I saw my sister unload a large gush
all over Tom's face, making me bust out laughing as he stared out in shock.
“Priceless.” I said and laugh some more.
“We both have to agree you give us the best orgasms ever.” My sister moaned.
“My turn now.” I said as I flipped to my back.
Tom looked at my sister.
“Please not that hole sis.” My sister said. “That hole isn't meant for us.”
“Too bad.” I said.
Tom sighed and push his cock in my sister’s slit, then pulled out and lined
himself up to me as he stared at me in worry.
“I can’t do it.” Tom said. “I mean I want to feel you, but I don't want to hurt
you.”
“Then lay down and I’ll do it.” I said.
Tom nodded and laid down on his back as my sister stared at me in worry.
“I’ll be fine.” I said as I climbed on top of Tom, then grabbed his shaft and
lined it up to me.
“This is going to be very tight by the looks of it.” Tom said with worry. “Go
slow please.”
I nodded and pushed down, then I felt a sharp pain, making me grunt.
“Jeez she has some crazy pain endurance.” Tom yelped. “I just felt her cherry
pop and she barely made noise.”
I slowly pushed down, making Tom’s mouth drop open as his eyes rolled back.
“Oh my God.” Tom moaned slowly. “She is so tight and warm.”
I saw my sister hold back her laugh as she stared at him. A few seconds later I
felt him touch my back wall, making me yelp out. Tom looked down and his mouth
dropped.
“She can take half of me and finally reach the back.” Tom moaned. “Please be
gentle on yourself honey.”
“I don't think she’s planning too.” My sister said. “She is to fixated on the
feeling now.”
I started to bob myself on him, hitting my back wall every time, making me yelp
out each tap as I felt overwhelming tingles surge through my body. A few
seconds later, I let out a loud scream as I felt myself cum for the first time.
Tom moaned as he push himself to my wall and came deep in my womb, then I felt
gushes come out of me as I couldn't hold all his juices. My sister pulled me
off him as she turn me to her face and sighed in disappointment, then she
started to lick me out.
“Call me anytime You wish to have sex kid.” Tom said.
“I will.” I moaned.
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