Unhealthy Obsession

Editor's note: this story contains scenes of non-consensual or reluctant sex.

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This is a short story I got inspired to do for no reason other than it really turns me on. As I continue to write it, it will become more explicit, and include more sexual acts, but this first piece is mostly an introduction to the characters, specifically the main character and his 'unhealthy obsession' with his younger sister. Enjoy.

I've always gotten along pretty well with my little sister, Izzy. We are sort of like best friends, but as a little sister, she's definitely a fucking brat.

She's a lot like me, she just turned 19 a few months ago, I see a lot of myself in her when I was that age. A bit of an outsider, rebellious as hell. She's very attractive, but I can tell she doesn't really recognize that despite her holier than though attitude towards the rest of the world.

I should be in college right now, but I really don't follow the whole "education is for champions" bullshit, so I'm 24, at home with my family. It's not horrible, I work, pay rent, have my own room, get to do whatever I want. Still figuring out what I want to do with my life, I guess.

I spend most of my days playing guitar, video games, watching porn, it's honestly become a routine I'm a little sick of. I don't have a girlfriend, I've had girlfriends, but they all rub me the wrong way and I prefer to just be alone instead of deal with their bullshit. I get the occasional booty call, but they're just that, a booty call. Nothing ever satisfies me. Nothing has ever satisfied me to be quite honest.

I'd say I'm pretty average, almost 6 ft, about 150 lbs. Definitely not bad to look at, dirty blonde hair, blue eyes. I don't know about my dick to be honest, I've had girls say it's big, small, but it's about 6 and 1/2 inches. Either way, it works, and that is all that matters, right? Ha

I've got some weird kinks, and probably watch more porn than the average guy, mostly videos where the girl is being fucked against her will, tied up, and helpless. It's become a bit of an obsession these days. Basically, I'm a fucked up, horny mess.

Our parents work every day, and they aren't home most of the time, so the house is usually empty.

My sister and I have become pretty close since she dropped out of High School, she's got a few friends, but she doesn't really go out. She likes to come in my room and play video games with me or listen to my music, I don't mind since I don't go out a lot myself, the company is nice.

However, I've had an increasingly hard time not doing things that big brothers shouldn't be doing to their little sisters. I know, this sounds bad, but as I said, I'm a horny mess, and she doesn't help the situation any.

My sister has an incredible body, I won't deny that I have admired it, and thought about her in several different positions. After she hit puberty, she started working out, her tits grew to the size of pomegranates, and she just became a fucking doll. Since then, she's become the focal point of my most fucked up desires.

She is always wearing things that accent her figure, even when she's home, she's in little tank tops and short shorts that quite literally hug every aspect of her form. Her least offensive outfit is a big t-shirt and panties because it at least covers

most

of her body.

Lately, she's been coming in my room more than usual. Laying on my bed, and watching me play, or just sitting there on her phone. I notice she'll lay on her stomach a lot, and when she wears a big t-shirt, it rides up above her thighs, giving me a beautiful view of her ass. I'm not sure if she is aware of this, and doesn't care, or what. Either way, she's got a great fucking ass, and I have to stop myself from down right smacking it whenever I see her sweet cheeks peek out from under her shirt.

The other day I was playing a game, and she came in wearing one of her favorite band tees, I've always admired her taste in music, of course, she got it from me. She looked up to me growing up, and I'm proud to say I had a lot of influence on her. Maybe that is why I find myself attracted to her, she's so much like the type of girl I'd want for myself.

Anyway, she came into my room the other day wearing nothing but a shirt and her little panties, and plopped herself right down on my bed. She watched me play my game for a while before gearing her attention to her phone, and then out of nowhere she asked me a strange question— "What kinda things are you into?"

"What do you mean, what kinda things? You know what kinda things I'm into, sis."

There was a moment of silence before I heard her sigh and continue, "What kind of things are you into, sexually? Your kinks, what kinda porn do you like?"

I immediately turned away from my game and looked at her, "What? Why are you asking me that?"

"I'm just curious, it's not a big deal. We are adults here. I just wanna know what you are into." She kept staring at her phone.

I was taken back for a minute, why was she asking me this? It's kinda weird to ask your big brother about the porn he watches...

I gathered my thoughts and responded as casually as I could, "Well, you know, the usual stuff I guess. Lesbians, squirting, cream pies..."

I didn't want to tell her what I was actually into in case it would weird her out. I know my kinks don't fall into the "usual" category at all...

"Really? That's boring... nothing weird, like piss, bondage, pet play, etc?"

She replied without hesitation, shrugging her shoulders, still keeping her attention on her phone.

She's so relaxed about this? This is fucking weird. She is my sister, and she's asking me about my kinks?

I'm not sure what she is expecting from me, but fuck it I guess?

"Well, if you want me to be honest... I like a lot things, like you said, I'm into bondage, pet play, piss play, some darker things." I wasn't going to tell her everything... I couldn't risk that.

"That's cool."

"That's cool? Ha. You asked me, I get to ask you, what are you into, huh?"

I tried to play it off as normally as possible, but my head was spinning.

"The same kinda stuff actually."

She finally took her eyes away from her phone and looked at me. "Some other weird stuff too, but mostly what you said."

"Wait, what? Are you being serious?" I was sure she was joking. There's no way she was into the same stuff. She saw my internet history, and she's fucking with me. That's it.

"Yup. Totally serious. I had my ex tie me up, and fuck me one time." She paused, "Why? Does it surprise you?" She looked at me so innocently with her big brown eyes, as if she had no idea what she was saying.

"That's pretty fucked up, ya know..." I decided to throw her some shade, and maybe pry it out of her that way. There is no way she was being serious... not to mention getting tied up, and fucked by her boyfriend is a lot different than the kind of shit I've been watching lately.

"Not anymore fucked up than the shit you watch."

"I knew it! You were on my computer, weren't you?"

She looked up at me with a raised brow, "Huh? No, actually. I'm just asking cause my friend is giving me shit for my kinks and I wanted to know what yours were so I could say I wasn't the only one..." She turned her phone to me and showed me a conversation her and her friend were having. Her friend was telling her she was a freak because she let her boyfriend tie her up and fuck her.

Ha, if only they knew...

A wave of relief rushed over me, and I realized I was making something out of nothing... She's just my little sister, and she's asking for some validation from her big brother, I get it. I should be honored she feels this comfortable with me, "Well, you're not a freak, sis. Plenty of people are into bondage, and it's probably one of the more normal kinks to have, I'd say." I tried to make sure she didn't feel like she was weird, her friend is obviously just a prude, and I'm certainly no one to talk.

"Thanks, I'm sorry if I made you uncomfortable. I love you, big brother." She smiled at me, and then got up and left my room.

Uncomfortable to say the least... haha.

Later that night things proceeded to get weirder after everyone had gone to bed and I got a text from my little sister asking for porn recommendations— "Sorry if this is weird, but since we are into the same kinda stuff I was wondering if you had any favorites, or really cool videos you'd mind sending me?"

She asked me to send her my favorite porn videos. What? I really didn't understand what the fuck was going on, but I guess she was just being open with me? She's 18 now, she's been home all the time, fairly certain she's been single for several months now, maybe she's just going dick crazy? I decided it couldn't hurt anything, maybe this is what other siblings do? Probably not...

I went through my favorites folder, and scoured through for the best ones. Heavy bondage, impact play, wax play, pet play, piss play, all the good stuff. I came across one of my most favorite NonConsent videos, and that is when it hit me... this could be a test, for both of us.

She could be testing me to see what I'd actually send her, and I could use this opportunity to see if she's really into the kind of stuff she claims she is. Not that it really matters. She's my sister, and I shouldn't be concerned with her sexual interests, or her mine... but here we are.

Against my better judgement, I sent her the video along with the other ones as she requested. "Yeah, sure. Here ya go, sis. Enjoy."

I waited for a response from her, but nothing. About 15 - 20 minutes passed and at that point I assumed she went to bed, or was busy watching the videos I sent her. Which, in that case, I was sure I'd hear something from her when she got to the video of the girl being abducted, and violently fucked by a guy in a mask...

Several more minutes went by, and still nothing, so I decided to go to bed myself. That is, until I heard a faint moan come through the wall of her bedroom. At first, I had to distinguish whether it was coming from her, or possibly the porn. I've heard her get herself off before, it's inevitable when our rooms are right next to each other, and I admit I get off to her sounds quite frequently, so I know what she sounds like, but this was different. It was desperate.

I could tell she was getting close too, her moans grew louder, and more repetitive. She sounded like such a needy bitch, whimpering, and moaning through the wall as she touched herself to the porn I sent her. That was probably the hottest thing, my little sister was getting off to the porn I sent her...

I wondered what video she was getting off to, was it one of the bondage ones? No way it's the NonConsent video... she wouldn't get off to that... would she? No...

I was barely able to control myself at that point, I just wanted to break into her room, and take her right there. She had to know what she was doing. I know she is aware that these walls aren't soundproof. Fuck, if our parents were awake they would hear her.

She had to be doing this on purpose...

I knew I couldn't actually act out these urges, so I jacked off to the sound of her cumming, and went to bed pretty pissed off.

All I've been thinking about are the fucked up, depraved things I want to do to my little sister, and it's this kinda shit that is making it harder. Literally.

Why is she doing this kind of shit to me? She's not stupid. Maybe she's figured it out. I mean, I know I haven't exactly been discreet while checking her out... I'm pretty sure she's caught me watching her in the shower, but she's never said anything... Does she even care? I'm probably thinking way too hard on this... Even if she did know, she isn't the type of person to make a fuss about it, so I guess it doesn't really matter...