I laid face up on the bed, all 4 limbs and my head bound to the frame, annoyed that Miranda had left me in here again. I didn't mind getting strapped in, but my girlfriend liked to tease me by leaving the key just outside my reach and running errands. Sometimes she'd be gone for hours, just to come back and use me again. She genuinely seemed to feel bad afterwards, but that didn't do me much good now. It was like she was a whole different person in the bedroom.
My wrists were bound together above my head, and she'd left me just enough slack that the tips of my fingers could almost reach the key that would unlock me. I'm gonna have to refuse to let her tie me up next time, or Miranda's just going to keep doing this to me. I had no idea what I was getting into dating her. She was deep into femdom, which isn't bad in a vacuum, but she had a habit of ignoring me once she got going.
I heard the lock of the bedroom door turn, and soft footsteps as someone stepped through the carpeted doorframe. I opened my mouth to complain, only to be shocked into silence when I realized who was staring back at me.
It was Miranda's older sister, Eve.
I started to stammer out an explanation, but she just burst out laughing. Based on her flushed face, she had already downed some liquid courage tonight. I knew she had a habit.
"Holy shit, I just wanted to steal a shirt! I knew Miranda was a freak!"
Apparently she'd picked the lock. At least she wasn't too far gone. She wasn't clumsy yet, and her voice wasn't slurred. She'd probably just lost her sense of judgment.
Pushing back my embarrassment, I started to talk again.
"Can you hand me that key? She refused to untie me, and just left."
Thank god I'd been clothed this time, I already wanted to sink through a hole in the floor as is. Caught tied to Miranda's bed by her own sister.
Eve didn't respond, so I looked her up and down, trying to figure out if I'd misjudged how deep into the bottle she'd gotten. She was wearing a plain pair of black leggings with a plaid blue shirt, the skin-tight material showing off her generous hips and thighs.
She seemed so different from her younger sister. Where Miranda was thin, blonde and pretty, Eve had dark brown hair and deep curves all over, with an impressive ass, which I pretended not to notice. Miranda was usually sweet, but had a genuinely scary temper when pushed, while Eve was more relaxed, with an assertive attitude.
Eve was also constantly on a mission to humiliate me in front of her sister.
After a concerningly long delay, she finally approached the side of the bed. Except, instead of giving me the key or untying me herself, she started to climb on.
"Um, Eve, what are you doing?"
"Don't worry, we're just gonna take some pictures for Miranda."
"...pictures?"
She straddled me and began to shuffle backwards, facing my bound feet.
"You'll see."
"Eve, can you please just let me up? This isn't funny."
By now her butt was hovering above my face, ominously blocking out the lights as I stared up at the skin-tight black fabric. Her knees were pressing down on my shoulders painfully.
"I think it's funny. And considering your predicament, I think I'm the one with the opinion that matters."
"Eve, jus-"
I was cut off as she dropped her full weight down on my head, landing with an audible smack of flesh on flesh. I quickly discovered I couldn't breathe, only my eyes peeking out from under Eve's thick butt.
"Mmmmmmmmmph!"
"Smile for the camera!"
I glared up at Eve's phone as she took a selfie, catching both her smiling face and my smoldering eyes, the rest of my head smothered under her frame.
"Oh, I bet Miranda's gonna love that one."
"MMMMMMMMMMMMMMMMMMMMPH!"
"Oh, don't worry. I'm sure she won't mind sharing her favorite toy with her big sister."
She finally lifted herself off me, giving me some much-needed air. It smelled like her butt, but that was the least of my problems.
"Eve, I swear to fucking god, if you don-"
She dropped herself right back down, earning another muffled scream in response.
"When I let you up again, I'm gonna talk, and you're gonna listen. Got it?"
I nodded, and she let me up again. I didn't say anything, just continued trying to burn a hole through her forehead by glaring.
"Alright, we'll take one more, and I'll let you go. Just kiss my butt, and hold still while I take a picture."
"Are you kidd-"
She casually flattened me again.
"Remember what I said about listening? Who has the power here?"
She let me up for air again, before poking herself on the right buttcheek, and pointing the camera at herself.
"I'm not kissing your ass, Eve."
"I'm just doing it as a joke, dude. I seriously don't think Miranda will mind all that much."
"It's not about Miranda!"
Well, it kind of was. I'm honestly kind of afraid of her sometimes. Regardless, I continued.
"You just spent the last few minutes crushing me under your fat ass, and now you expect me to let you take a picture of me kissing it? You're my girlfriend's sister!"
"May not be the best idea to insult someone who holds your life in their hands, you know. I could just smother you unconscious and take as many pictures as I want afterwards..."
"You wouldn't."
She paused for a few seconds, then laughed a little.
"You're right, I won't. I'm not that drunk. You're not getting up until you kiss my ass, though. It's gonna have to be a good one now, too."
"I'm still not doing it."
"Mmm, we'll see how you feel in... let's say 15 minutes."
Eve once again dropped her full weight down on my face, this time wiggling her hips to get comfortable. I was left glaring up at her back as she casually scrolled through her phone, her full weight crushing my nose painfully.
After around half a minute, I started to get desperate for air. Eve should've let me up by now. I'd taken a deep breath before she sat down, but my lungs could only hold so much, to Miranda's eternal annoyance.
Eve just ignored me, not shifting a muscle as I struggled harder and harder.
It wasn't long until my whole body was bucking underneath her, beginning to make the bed shake.
"Mmmmmmmmph!"
I started to chafe my wrists, yanking on the restraints for dear life so I could get some air. Had Eve decided to knock me out after all?
She reached over and turned on Miranda's tv, drowning out my screaming as the whole bed shook from my desperate struggling. The three of us lived alone in our shared apartment, so it's not like anyone could've saved me regardless.
By now it must've been well over a minute, and I could feel my lungs starting to seize, desperate for any amount of air as Eve relentlessly smothered me.
I paused for a second, then gave one last desperate heave, throwing all of my remaining strength into one last yank. It accomplished nothing.
Finally, as I started to give up hope, Eve relented. I desperately began to gasp for air, revived right on the verge of unconsciousness.
"Nice, almost 2 minutes. Miranda's been breath training you, hasn't she?"
I nodded weakly, still recovering.