I laid out on my bed and loaded the video on my iPad, got comfortable then once I was ready I put a little lube on my hand and began to slowly stroke my cock as I watched the movie. I never could make it to the end without cumming, hearing the noises from her pussy and her moans as she climaxed always set me off and I was already rock hard in anticipation of it.
Right as I got close though, Heather, my older sister, walked right into my room without knocking and after spotting what I was doing, froze with her eyes wide open and glued to my cock. I quickly threw the iPad on the bed, not thinking to close the movie and pulled my bunched up sheets over my body.
"What the fuck Heather, can't you knock?" I said.
"You're supposed to be at work, I needed to borrow your charger," she replied.
Right then, the video got to the climax, the girl moaning, her soft voice filled with lust "that's it, fill me with that big hard cock, fuck me baby, take my pussy...".
Heather's eyes narrowed and before I could move she quickly snatched up my iPad and looked at the screen. A few taps later and she just glared at me.
"This, and all the fucking pictures you have, were in a hidden folder on my computer. How the fuck did you get them?" She said, clearly pretty angry.
"You'd left it unlocked one time and I was looking for a picture you'd taken of me," I replied.
"So, you downloaded my personal pictures to jerk off to them?"
"Y... yes."
"Why the fuck are you home anyway?"
"It was quiet so I got sent home early."
Heather stood in front of me for what felt like forever, I'm sure it was just 30 seconds or so but she didn't say anything, she put the iPad back on my bed, took my phone charger and left the room. I quickly checked to see if she'd deleted them but they were all still there, a few minutes later I got a text from her.
"Have you shown them to anyone else, don't fucking lie to me."
"I swear I haven't."
"Why, there's so much porn online, why my pictures and that video?"
"You're so sexy, your pussy is the prettiest I've seen and your nipples are perfect Heather."
"I'm also your sister, you remember that part right?"
"Yes. I can't help that I like you so much."
"Me or my body."
"Both."
"I want payment for what you have."
"But I'm broke, I don't get paid for another week."
"I didn't say money, little brother. Turn your cam on, I want to see you cum."
I hadn't cum from my masturbation that morning but I had started to go soft and with my ipad camera trained on my cock I couldn't focus and couldn't get hard. Heather messaged me again.
"What's wrong?"
"I usually jerk off to your video, this is Mom's old iPad and it won't play anything at the same time as video chat."
"I'm coming in there to watch then."
"Wait, I can turn my laptop on."
"Fine, hurry up."
I think I had my laptop booted up and my ipad video playing in record time, Heather watched me on cam as I got hard then masturbated to her playing with her pussy. When it got to the point of her climax on the video, I came too and groaned in pleasure as my cum sprayed over my stomach and chest. I'd no sooner finished cumming when she messaged me again.
"Do you always cum that much?"
I wiped my hand on my towel and replied.
"Yes, but I played last night too so it's usually more. Are we done now?"
"For today, yes but you have a lot more to pay me back. I'll tell you what I want."
I got in my shower, almost embarrassed at what I'd just done but also stupidly turned on. The thoughts I'd been raised not to have, being told your sister is not to be objectified in a sexual manner only made it more desirable for me and I wanted more. I was semi hard thinking about the possibilities and the thought of jerking off for her again by the time I dried off and about jumped out my skin when Heather was sitting on my bed. Thankfully my robe hid my growing cock.
"Sorry, didn't mean to scare you. I don't think I need to remind you but this between us goes no further, you tell a living soul and I swear you'll regret it," she said sternly.
"I'd never do anything to hurt or embarrass you Heather, you don't need to threaten me," I replied.
"Well good."
"Are we done with it then?"
Heather just laughed.
"Not by a long shot little brother," she said then left my room.
The next day, the start of my regular days off, I showered and since it was raining I planned my day around just playing video games like usual. I hadn't even dressed when I got a message on my phone, 'I want to see you cum on cam again'. I sighed then set up my laptop, the iPad video beside it and waited for her to connect. After a few seconds though I heard a pretty loud "FUUUUUUUCK" coming from Heather's room. I threw on my robe and went to make sure she was okay.
"What's wrong?" I said, not knocking.
Heather was sitting on the edge of her bed, holding her laptop over the rug, it was dripping liquid.
"I spilled my fucking soda on my laptop trying to get comfortable, I forgot it was sitting there. There's no saving it this time either, I heard it spark."
"I can pull the hard drive for you, save your data."
"I bet you will little perv, you already have all my nudes," she said with a grin.
"I'm serious, I'll restore it to a new one for you."
"Well thank you. But it can wait, you still owe me and I need to get off."