My Sister Jenny - 02

After my sister was fucked by my dad, she gave him a blowjob on the couch in the living room.

After fucking my sister Jenny, dad collapsed full spend on her. They caressed eachother and spoke about, how good it was and how much they loved it and how much they loved eachother. I saw everything I needed. Now it was time to retreat, so I would not get caught. But it was nearly to late. They looked at there mobiles and talked about, that I had not notified them, that I was on my way home. So they wanted to go to the living room and watch some TV. I tried to rush as silent as possibly downstairs and to my room. But as I was about to go through the connection door, which leads to the part of our house where my room is, I remembered that all my stuff from school was still in the living room. If they would found them they would knew I was already home. I ran back to the living room. While I was grabbing my stuff some bag of it scratched at my groin. It was at that moment that I realised that my cock was hard as iron. The whole watching of the scene in my fathers bedroom, had me aroused like nothing before, without even noticing it in the mental stress of all of this. But I had no time to cope with this and headed back to my room. But it was too late. They already were on their way downstairs. The only way out was the home office room of my dad. Despite being in hurry I slowly pushed the door handle down, so that they did not hear it. Trying desperatly not to hit the door with my school bags. Got in without them noticing it and carefully put my stuff down. They arrived at the living room and settled on the couch, while I pushed the door shot without closing it completely, so that they could not hear it closing. They started to watch a crime show. I do not remember which one it was. I urgently wanted to get to my room, so I could think about all what I just discovered. And also to take care of my hard-on. But there was no way I would risk doing anything about my hard-on while being trapped in my dads work room.

After a while I heard them starting to flirt. I risk a glance through the door gap and saw how they threw playfull glances and erotic words to each other. And it did not take long that my sister crouched on the couch to my dad and started kissing him. He reached under her blouse and started to fondle her breasts. Jenny caressed his breast and belly under his shirt. She took not long to get from under his shirt to in his boxershorts. I could not risk to open the door wider. But I recognized that she was starting to massage his dick with her hand. Soon she helped him to pull his boxershorts down. And still on all fours on the couch, she did not waste time and bent down and took her fathers not full erected dick in her mouth. She immediately started to bob her head up and down over the full lenght of his cock. She definitely did this not the first time. My dads cock was soon full hard. This time I had a much better view as in the bedroom. And it was much brighter. I could see how glistening his dick was from the spit of my sister. He had one hand on her head. Forcing her head on the full length of his cock, even if it looked, as if she did not need to be forced. From the material I studied online I was pretty sure, that she was kinda natural talent in deepthroating his dick. His other hand fondeld alternately her breast, ass and cunt. I could it not see clearly, but I was sure sometimes he was fingering her cunt or even her asshole. Her experience in cock sucking did not take her long, till her dads movement become more and more urgently and suddenly he hold her head firm over the whole lenght of his dick trying to pump even more of it in her mouth and shot his whole load into it. Jenny was not irritated from the firm grip and keep sucking and swallowing his dick and his sperm, till he was full released and satisfied.

A release was the thing I was now in need for. Because I was stroking my cock the whole time. I needed to get out of here and into safety. They fixed there clothing. I just now realised that my sister had only a blouse on and nothing below. Not even some underpants. I overheard them, that my orchestra practice would end in half an hour. And that I would whatsapp them soon, when I would be home or if I would stay by a friend. Which maybe would give them time for another round. That was it. I would text them, that I was coming soon. They would need to get upstairs to put all there clothes on. I took my mobile and started to write. Then it hit me. Oh damn, if they would write back, they might could hear the mailing sound from my mobile phone. Luckely none of my friends or anyone else had texted or called me the whole time I was in hiding mode. I turned the sound off and continued writing, that the practice was earlier over. And Bennys mom had taken me and Benny home. And I would walk from Benny to our home and would be there in about 10 minutes. I send it and soon there phones where beeping. They looked at it and told eachother, that they needed to hurry. They got up and checked the couch, if there was any evidence of what they did. Then moved upstairs. Dad told Jenny to take the alarm for the connecting door upstairs and turn it off. What alarm for the connecting door? I realised at that moment, that all the talking about my privacy in the other part of the house was a lie. And it only was for there privacy to fuck each other. And they even set up a alarm mechanism in the connecting door, that when I come over unexpectedly, they would recognize it in time. So if the alarm was not turned off yet, I would trigger it, when I would went through the connection door and they would find out, that I was here the whole time. As soon as I was sure that they were upstairs, I sneaked with all my stuff out of the front door open and closing it silently. And I went all around the house on the other side of their bedroom windows. Hopefully none of our neighbours recognized anything about this. Going through my entry of the house into my room, throwing all my stuff by side. Caught some breath and went through the connecting door. And loudly yelled "Hallo!". Both greeted me from above and my sister hopped the stairs down smiled at me and gave me her warm sisterly hug. I regognized that she still did not wear a bra under her blouse. But could not see, if she had put a slip under her skirt. Imagine that she could be naked there too turned me on. My dad told from above that it would took him a little more time, because he was in need of a shower. I said he did not need to worry, I had a little exhausting day and would rest till dinner in my room. Both replied unsuspectingly "Okay!". And I went to my room. Locked the door. And released my builded up arousal three times, remembering the fucking and sucking I just had seen live between my sister and my dad.

During the evening and a nearly sleepless night I was thinking about everything I had discovered. I was sure, that my dad did not rape my sister or forced her to anything. But I was not sure, how long this already was going on. Was it really that they moved me to the other side of the house to continue their fuck fest more easily. Or happened this only a short while ago and the alarm at the connection door was later installed. I tried to remember any suspiciousness during the last month. Any clue I maybe had missed, that they both had sex together. But I could not remember anything. I needed to know more. But I could not walking around the house more often, without getting suspected. Especially the alarm in the connection door would warn them early. And if I would go around the house and came through the front door, more than one alarm would ring in their heads. I came to the conclusion, that the best way would be, to place some hidden cameras in the house. Mainly my dads room, my sisters room and the living room. I was not the sporty kind of guy. I was rather a little bit small for my age. Beside playing clarinette I had more hobbys and activitys in school that would me put on the geek side of life. The good thing about that was, that most of my friends were geek guys too. So it was more easily to get such stuff, because there were a lot, who would be fiddling on computers an similar things as an hobby.