*Like most of my stories, you'll have to forgive my artistic license for names of knots or terminology. Not so much a bdsm/bondage story, more a thing to bring the 2 characters together. Future chapters possible depending on this one's reception. Sex between brother and sister only, all characters of legal age.*
*
It was a pretty average summer day. I sat in my room reading, it was pouring rain so my usual fishing or riding my bicycle was off but I was okay relaxing. Mom and dad were out shopping for new furniture and my older sister was in her room. Usually she'd be harassing me or asking me to help with her chores but she was unusually quiet. Right as I began to get curious about what she was doing I heard a thump come from her room then a minute or so later she yelled for me.
"C.. come in," she said.
It took a few seconds to register the scene before me, Clara had been playing with rope, a self tying guide video on loop on her laptop but something must have gone wrong. She was laying on the floor on her back, a rope looped around her bedpost and was completely naked. She'd tied her breasts to almost frame and enhance them and had somehow managed to tie her hands and ankles together behind her back.
"How the hell did you even manage that, Clara?" I said, transfixed on her breasts.
"It's supposed to be a quick release loop that I could untie with my teeth but I fucked it up. Can you stop staring at my tits and help me?" she snapped.
I was in no rush, I followed the rope and found the loop that was meant to be in front of her and gave it a tug. It released her hands but instead of untying the rest she covered herself up with a towel.
"Thank you, you can go now," she said.
"Are you sure you don't need more help?" I replied.
"I'm fine now, thank you."
"If you'd tied the triple cross knot closer to your ribs you would have had no trouble with the hitch frame loop you know," I said, walking away.
"Um, how do you know the names of these?"
"My ex loved being tied up, she taught me how to suspend her and everything."
I left and went back to my book, 30 minutes or so later, Clara lightly knocked on my door then came in.
"Sorry I snapped at you, thank you for untying me," she said softly. She'd dressed in her silk robe.
"It's okay, I couldn't help staring," I replied.
"Do you still remember how to tie ropes?"
"Of course I do. I still practice my knots every now and then, I enjoyed it."
"What kind of stuff did you learn?"
"Basic bondage stuff to corsets, suspension, anything really."
"My friend got me into it and I can't stop thinking about it. I love the feeling when I'm tied up."
"Uh, which friend?"
"Just a friend you perv, she'd practice new stuff she learned on me and I loved it. She moved back to Florida though so I was trying to learn complex self tying stuff."
"There's some stuff that's fine to do on your own, corsets and framing but being bound can be risky alone, what if it was Dad that was home and not me?"
"He wouldn't have stared at my tits, he'd have got a towel to cover me up then lecture me for three hours."
"Well, they are really nice."
"I won't stay mad since you helped me I guess."
"Uh huh. Why are you here if not to be mad at me?"
"I uh, would you like to practice on me?"
"Practice what?"
"The rope silly, what we've been talking about for 10 minutes."
"I don't know, Clara, is a little weird, you're my sister."
"Didn't stop you staring at my tits. We can do a little tomorrow when Mom and Dad go to church."
"I'll think about it."
I couldn't focus on my book, I had the vision of Clara's breasts stuck in my head and any thoughts of 'you shouldn't look' were overshadowed by how much they turned me on. I took a shower and jerked off, my usual barrage of imagery gone and just my mental picture of Clara's perfect pair getting me off.
That night at dinner our parents went on and on about all the different stores they visited, Clara and I only started paying attention when they said they were going to do the same again after church that Sunday.
After dinner we all sat watching a movie, Clara went to the bathroom and as she got back I got a picture message from her, she'd sent me a pic of her breasts. The text said "To help you make up your mind about tying me up". She didn't look at me when she sat back down, thankfully I was in the chair and nobody could see my phone when I opened her message. I waited until our parents went to bed with their usual 'don't stay up late' before I said anything.
"Fine, just don't wake me up too early," I said.
"Sweet! You can keep the picture, just don't show anyone," she replied.
I found myself watching her ass as she practically bounced away, thinking to myself 'this is nuts' the whole time. I know I didn't sleep well that night either, it seemed like every couple of hours I'd pull up her picture and jerk off to it. Eventually though I did sleep, I woke to a freshly showered Clara sitting on the edge of my bed with a grin on her face.
"I slept like crap, can I please shower and have coffee first?" I said.
"Sure, sorry, I didn't mean to be so eager, I'm just excited," she replied.
"Well, if you make the coffee I'll be ready quicker."
I took a nice cool shower then drank the coffee Clara brought me then followed her into her room. She took her robe off and stood in front of me in a pretty skimpy bra and panty set, my jaw dropped and I knew I was in trouble.
"I figured you could have something nice to look at since you're taking the time to do this for me," she said softly.
"The picture was payment enough sis," I replied.
"That was encouragement."
"Fine."
I took my time with her, she wanted a tight corset then wanted to have her wrists bound to her thighs, she had a picture of what she wanted pulled up on her laptop. She seemed to be in pain when I started with her wrists though.
"Are you okay?" I asked.
"Y.. yes, is just my bra wire is digging into my ribs, can you just take it off?" she replied.
"You're sure?"
"They're boobs, little brother, they're not going to bite you."
I took her bra off and let her breasts spill out, my cock, despite me jerking off 3 times the night before, started getting hard and the sweatpants shorts I was wearing did nothing to hide that. Clara noticed but didn't say anything, just smiled.
I took my time, I felt like my cock was ready to explode, watching her breasts jiggle with every move I made didn't help, neither did the pose, her legs were slightly open and exposed the crotch of her panties. To make my rising lust worse, she'd started breathing pretty heavily and had a damp spot on her panties.
"So how long do you want to stay that way?" I asked.
"I... Can you sit with me a while, let me rest my head on your lap instead of this pillow?" she replied, softly.
"Uh, sure."
I tried to get comfortable but there wasn't a way to easily adjust my cock, she noticed me wriggling a little and just smiled at me.