Step-Sisters

Madison Beer x Addison Rae. 3rd POV. Word Count: 3.8k.  Madison doesn't really like her new step-sister. However, she makes a great discovery that changes her mind.

A/N: This was originally going to be a blurb, but I thought it would be better (and make more sense) to give some back story. I won't be turning this into a series but I may do one or two more parts.

☆・*。

At the age of 21, Madison wholeheartedly believed that she was too old to have stepdad. Her parents divorce and her mother moving on so quickly had left her with her head spinning, but learning she was going to have a step-sister that was two years younger than her made things even worse. Yes, Madison was resentful, but she didn't dislike her step-sister for no reason. Her mother kept pushing and pushing for the two to be close.

Addison is a cute girl, very nice too, but Madison found her too childish at times. No one could be cheerful all the time, yet here her step-sister was; always smiling like she's never had a problem in the world. The way she had taken so well to Madison's mom made her wonder if she liked her own mother. Madison surely did not like her step-father more than her own father even though he was nice, but no matter how nice he is, she was never going to truly like him.

Two weeks after their wedding, they were moving into a new house. It was bigger than their old house, but Madison missed the warmth and comfort of the home she had grown up in. Sure it held the memories of the last few months of her parent's rocky marriage, but those memories could never taint the ones she held so dearly to her. She had to move an hour away from her friends too, but her mom just always said "at least they are sort of close. Addison and her father are moving across the country for us."

Madison hated to be the stereotypical older step-sister that didn't like the younger one, but her mom constantly pushing them to do things together and letting Addison use Madison's things without her permission pissed her off. She took her frustration out on the 19 year old and if she was being honest, she did not feel bad about it. Addison was wearing her clothes, touching her stuff, and always hovering around her. It was like she wanted to be her, but that's just what Madison's mind made up. Addison did look up to her step-sister, she seemed cool and was gorgeous, but she wasn't trying to be her. She just wanted to appease her and find an ally in her. This marriage and move had been hard on her too, but Madison was too selfish to even consider that.

"No parties, no boys, and no fighting," Madison's mom directed that last part to her daughter, making her roll her eyes. Their parents were going out of town for the weekend. Her step-father's co-worker was getting married or something like that. Madison often tuned him out whenever he spoke, much to her mother's chagrin. "Madison, you're in charge."

She was used to that.

Madison was always put in charge because Addison was just 19 years old. She could catch herself, but quite honestly, her father and step-mother didn't trust her to be that responsible. While Madison had been brooding about her friends being an hour away, Addison had made new ones; new friends that seemed eager to party in a big house.

"I'll leave my other credit card here just in case. Seriously, no parties girls. You can have a friend or two over, but that's it."

Every time her step-father used that "stern" voice of his, Madison wanted to laugh. He is still struggling to navigate being around his 21 year old new step-daughter who clearly doesn't like him. Just like Addison, he tries his best with her but he gives up easier than his daughter; maybe it's because Addison is just a little naive.

"Be safe and have fun," Madison's step-father grabs their suitcases and starts hauling them to the car. Addison follows after her father so she can give him one last hug. Now that they are alone, Madison's mother grabs her arm and makes her look her dead in the eye, "no being mean to Addison this weekend. I know you're not super fond of her but just don't go out of your way to be mean to her. She really looks up to you so maybe you two can bond over something this weekend."

"Mom-"

"Aht! I don't want to hear any back talk. Be nice or else I'll cut your credit card in half." Madison narrowed her eyes at her mother's thinly-veiled threat. She just simply nodded, not wanting to cause anymore drama. Her mom spoke to her as if Madison didn't have her father to just get her a new one. But if her mother wanted her to be besties with Addison then she'd at least try.

-

What compelled 19 year old girls to giggle all night was beyond Madison.

Addison took advantage of being able to have some friends over and she invited two new friends that she had made. Madison rolled her eyes after Addison's attempt to introduce her to them and get them all to hang out. (Deep down Madison was just jealous that her step-sister was so outgoing. Madison was used to being the only child, the gorgeous one, and the coolest girl in the room. Now that her step-sister was in the picture things were different.) Madison declined and went up to her room, however Addison's was right by hers and she heard them talking about stupid stuff likes boys and social media drama until the early morning hour.

Madison is not sure when they went to sleep, or when she went to sleep for that matter. But she woke up to a quiet house, almost as if they were gone. In reality, she probably had a good thirty minutes to an hour before they woke up; she had time to make herself breakfast without them asking for her to make them some too.

The kitchen was a bit of a mess; two pizza boxes, three glasses, and some dishes in the sink. Madison wasn't going to clean up after her step-sister because she didn't want to set a precedent. She left the mess there and started on her breakfast. However, something caught her attention. It was a buzzing noise. More specifically, a phone buzzing. It wasn't her phone because she had left hers on the charger in her room.

She had an itch that could only be scratched by picking up the phone and figuring out who it belonged to. Madison peered around the corner to make sure no one was coming and then quickly went to pick up the phone. It was Addison's as evident by the background photo of Addison and some random girl, possibly an old friend from her hometown. There was no passcode on her phone which shocked Madison. Madison had kept a passcode on her phone since she was in middle school. It was weird to see someone who was 19 have their phone unlocked for anyone to open it; anyone like Madison.

"Mom did say to get to know her..."

Madison felt no remorse unlocking the phone and scrolling through Addison's apps, text messages, instagram, and twitter. Curiosity had burned inside of her as she tried to use her step-sister's phone to truly understand what type of girl she was. Madison didn't believe she was always this happy-go-lucky girl, but her activity on her phone kind of proved that she was.

A snapchat notification appeared at the top of the screen as Madison read some boring tweets that Addison had sent off. She was careful not to click it so Addison wouldn't know it had been disturbed, but she opened the app anyway. She scrolled through Addison's snapchat memories and it was all just photos that didn't interest her. Something nagged at her to see if she's using the 'My Eyes Only' feature. One click and Madison found out that she did, but she was going to need a passcode. It was four digits so she tried to think of something easy like Addison's old address number, her father's birth year, and even Addison's birth year. None of them worked, but then she remembered to try Addison's moms birth year. Addison's mom was born in the same year as her own mother and month; it creeped Madison out if she was to be frank about it. She typed the four digits in and it worked.

She was granted access to Addison's hidden snapchat photos and it was nudes galore. The photos had only gone back to two months ago but there were so many. Madison's mouth was agape as she observed the semi-nude photos, fully nude photos, and even videos she had hidden. There was a video of Addison giving some random guy a blowjob. Madison recognized the dress she was wearing in the photo as the one from their parent's wedding. The date had checked out and Madison began to believe her step-sister was a little slut.

Some of the videos made Madison feel like she was watching porn. There were some new videos, one as recent as five days ago, that had caught her eye. She felt weird watching it. It's a video of Addison on her back while she fills herself with a dildo. But there was something very distinctive about the dildo. It was half pink and half purple. Now unless it was just a coincidence, that was Madison's dildo. She bought that dildo years ago with her friends after she had turned 18 and went to her first sex shop.

Madison couldn't believe her eyes as she watched her goofy but shy step-sister fucking herself with her dildo. She honestly shouldn't have been snooping through her phone but she couldn't help it. What was supposed to be harmless snooping now left her angry. She knew that Addison touched her stuff, but going as far as to sneak in her room and take her dildo to fuck herself with it was a completely different thing.

Addison filled herself with the thick toy, moaning and making eyes at the camera like a pornstar. The camera was so close to her cunt that it was the ultimate view for anyone who coveted her. Madison didn't think that her step-sister was no nasty but her creamy pussy was a sight to see that even Madison could admit was mouth watering. She found herself getting hotter as she watched, but then a sense of guilt washed over her. Arousal pooled around Addison's opening and eventually slid down to her asshole; how could something like that not turn her own?

Madison had moaned without even realizing it. She was enchanted by what her step-sister was doing to herself using Madison's toy. Only when the video ended did she come back to reality. It would be unlike Madison to not confront Addison with what she saw and ask her what the hell that was about. Yes, she's going to have to admit that she was looking in a place she shouldn't have been, but it didn't matter. Her mother and new step-father kept telling her to be Addison's role model, so she was going to take matters into her own hands and teach her a lesson.

-

"Hey," Madison hit the door frame loudly, grabbing the attention of the three girls in the room, "you're little friends have to go."

Addison's friends groaned, but they all knew there was nothing they could do about it. Madison was in charge and she ruled this house with an iron fist. She gave Addison's friends a bitter smile as they walked past her to slip through the door. Addison sat on her bed pouting and crossing her arms at her older step-sister like a petulant child.

"What's your deal?"

"Shut up."

"At least let me walk them out."

"No. Shut up and sit back down."

Addison did not like confrontation so she obeyed her step-sister. She's not sure why Madison seems to be so mad at her. Or maybe there isn't a real reason, just that Madison is a bitch.

"We need to talk."

"About what?"

"Why were you playing with my dildo?"

"What!? W-what are you talking about?"

"Don't try to lie to me," Madison stepped into Addison's room and closed the door behind her, "I seen your little video. I didn't think my new step-sister was a porn star in the making...I wonder what your dad would think."

"Why did you go through my phone!? Are you that miserable that you just want to make my life a living hell?"

Madison was annoyed that Addison was trying to get loud with her, but it was also comical to her. If Addison thinks she can take on Madison, verbally and physically, then she was wrong.

"I don't care about you enough to make your life 'a living hell'. Yes I went through your phone but I'm glad I did because now I know that you've been going through my stuff and playing with my toy."

Addison opened her mouth as if she wanted to rebuttal, but she quickly shut it. Madison smirked and knew that she had won this battle prematurely. Her step-sister was too soft to get mad plus she also had done something she shouldn't have.

"Don't tell my dad about...anything. Please?" Her voice had gone soft and her eyes were wide like a lost doe. She looked like she was on the verge of tears, but it did not make Madison feel sympathetic. Instead she felt powerful and emboldened by how easy it was for her to get Addison to back down.

"I won't. But you exactly aren't getting off scot free. I think it can be fun for the two of us though," Madison approached her until she was nearly towering over her step-sister sitting on the bed. She bent down and soft grabbed a fistful of Addison's hair. She flinched as Madison made her look her in the eye, "we can have a lot, a lot of fun. You just have to promise to be a good girl. Do you?" Addison nodded out of her fear and it made Madison excited. Those photos and videos made her body heat up, but this made her full blown aroused. "Good girl."

Addison did not know what was going to happen to her but that devilish smirk on Madison's face worried her. She believed that Madison would not harm her, but she was just nervous about what Madison might make her do. She could make her do something sexual, record it, and send it to everyone on her snapchat friend list. Addison just desperately hoped that her step-sister did not go back on her word and tell her dad. Madison would be stupid to do so, and playing with her step-sister would be much more fun than seeing her get in trouble for some harmless nudes.

"I want to see what it looks like in person," Madison said referring to that little clip she watched earlier. Addison's eyes went wide, but she was rendered silenced by the shock her body felt. "I know you still have my toy in here...I haven't needed to use it in a few days so I haven't gone looking for it." Addison looked at her sheepishly; she had been caught.

She is unsure what is more humiliating: grabbing the dildo from her the bottom drawer of her nightstand or the fact that she was actually taking off her pants for Madison.

"Don't keep me waiting," Madison teased. She turned Addison's desk chair around so she could sit down while staring directly at her step-sister. She folded her arms and crossed her legs as she watched Addison move faster.

Addison kept her top on, but it barely did anything because it was just a tank-top that she wore with no bra underneath. Her nipples were visibly hard from the excitement her body felt knowing it was going to feel good very soon. She felt shameful that her body was having this reaction, but it was beyond her control. She spread her legs, exposing her cunt to Madison and placed the head at her opening. She closed her eyes and tried to pretend Madison was not in the room. It was a little bit easy to do so because her step-sister was so silent that she could only hear her soft breathing.

She slowly slipped it into herself, trying not to moan too loudly. It felt so good, just as good as it did when she first slid it into herself. The honest truth was that the thrill of it being Madison's toy had made it even hotter. Her skin felt on fire as she waited until they all went to be so she could fuck herself without any interruptions. Now that Madison was in front of her, watching her, she was unsure how she felt. But her pussy was so wet and her nipples were harder than ever before. She is not sure how Madison feels about her but right now she sort of liked that her step-sister was watching her get off.

Madison couldn't believe that Addison had really obeyed her, just like she couldn't believe Addison stole her dildo to make videos on her phone. She thought Addison would call her bluff and vehemently reject her commands, but instead her step-sister folded so quickly that Madison had to bite back a laugh as Addison slid down her pants. Addison was slowly fucking herself, not concerned with putting on a show like she was for her phone's camera.

"Fuck yourself like you mean it. You were beating up that poor pussy on snapchat so I know you got it in you," Madison taunted. Addison didn't dare open her eyes, she didn't want to see the smug look on Madison's face, but she obeyed her commands. She pumped in and out of her twat faster and deeper until she was hitting that spot inside of her that made her legs shiver. Moans finally erupted from her lips once she started going faster. It's hard to not let herself go when she was fucking herself so deliciously.

Madison began to watch in awe as Addison's fucked herself harder. She was sort of jealous that she wasn't receiving the same treatment, her cunt getting wetter between her legs from the sight. She felt no remorse as she reached down and started to rub herself through her shorts. Being able to hear and watch this in front of her was way better than any good porno she's watched online to get herself off. She rubbed her clit while watching her step-sister fuck herself with her dildo.

"You like filling that pussy with my toy?"

"Yes!" She cried.

Madison felt like she was going to cum already. Addison was so obedient and she was going to have so much fun making her do whatever she wanted. But for now she just rubbed herself to the view of Addison's sweet twat taking her dildo so well. A fantasy about one of Addison's friends still being here crossed her mind. She'd bend her step-sister over and forced her face into her friend's cunt while Madison fucked her with the dildo from behind. Her mind was coming up with some filthy scenarios and all of them involved her cute, goofy step-sister. Maybe even one day she'll have her bouncing on the strap-on she's been thinking about buying.

Addison's tits jiggled as her tight body jerked. She looked like she was inching closer to her release.

"Cum all of over my cock...cum for Madison."

At the end of the day, Addison was a good girl, and she was going to obey even if the situation was naughty. She started cumming hard around Madison's dildo, her walls gripping it and feeling all the ridges inside of her delicious cunt. Her cum pooled around her slit.

Madison pulled her hand away from her cunt before Addison could see her touching herself. She didn't want her to know that she was turning her on so much. One day she'll let her know, but today she just wanted to make her step-sister get off her viewing pleasure.

"Oh, you're so cute Addi," Madison's voice broke her out of her haze, "but you aren't done. Get up and turn that pretty ass around. You're going to ride my cock until you cum again."

Addison's body felt like jello from her first orgasm, but she didn't want to see Madison's reaction if she didn't obey.

She held the dildo so she could get on her knees and slide down on it. Her ass faced Madison so her step-sister could see the cock sliding into her. Sinking down on it was so much different than pushing it into her. It felt like it was reaching even deeper in her and she felt incredibly full. She still held onto the dildo as she began to ride it. This gave Madison such a better view of her little pussy getting split open. Addison was riding it good and hard.

"Keeping riding my cock," Madison cooed.

Addison kept bouncing and she would've done it regardless, but Madison's tone of voice egged her on. She was unsure if she could cum again but she knew Madison was going to force her so she started chasing her pleasure again.

"Don't you dare slow down."

Madison did not care how spent her step-sister was, if she wanted to play with her toys then Madison was going to make sure her dildo was put to good use. Addison just moaned like a bitch in heat and Madison loved the power she had over her.

Addison's second orgasm had hit her much harder and quicker this time. She slammed herself down on it, filling herself to the brim and feeling the rubber balls grinding against her clit as she swirled her hips. Her moans came out strangled but they were so loud that Madison hoped the neighbor's didn't hear her (although she probably would've found it hot if she found out someone had heard.)

"I knew you were a fucking slut," Madison got up from her seat and stopped Addison from light bouncing on the dildo by placing her hand on her shoulder, "stop fucking yourself. I know you can't help it, but don't be such a horndog."

Addison pouted at both the taunting and the emptiness she felt when she pulled herself off of the dildo. Madison grabbed it before it flopped on the bed. She was looking down on Addison again.

"Don't fucking touch my stuff."

Madison left Addison in her room alone to come to her senses. She left dazed and confused by what just happened, still not fully believing her new step-sister went so far. They still had one more full day together, so much could happen between now and when their parents are expected to return. As of now Madison has no clear plans of fucking with Addison again, but she relaxes in her bed knowing that Addison is going to be on edge, waiting for her step-sister to force her to fuck herself again. The power stroked Madison's ego so much that she was starting to take a liking to have a step-sister.