Mark looked at him for a moment then let out a deep breath and nodded. He looked as if He didn’t trust himself to speak.
I came up and put my arm around my brother. I could feel him trembling.
“Well I’ll tell you what,” Uncle said coming over and putting his hand on my shoulder, “At least I know no one’s ever going to mess with my gorgeous niece here.”
Uncle Ray was trying to make light of what was going on and I appreciated it but Mark was a mess right now saying with that soft intense tone of his;
“No one fucks with my sister. Ever.”
With that he walked away passing Malory and Jake as if he didn’t see them. As I followed I heard dad say;
“Case in point Ray.”
I shot dad a dirty look as I stormed past him, he tried to catch my arm and say something but I kept walking. How dare he do that to my brother. I was furious at my father, it had been getting more and more obvious lately that he and Mark weren’t getting along and I knew dad had never really wanted Mark to live with us, worried he was dangerous but that was bullshit he had deliberately whipped my brother up trying to show something to my uncle like Mark was a dog who could do tricks. I almost said something, but decided I didn’t want to cause a scene or more of one in my uncle’s house.
Besides Mark needed me, I was the only one he would respond to when he got like this. Fortunately Malory and Jake stayed downstairs probably listening to my father and Uncle Ray talk about Mark. Mom and Aunt Karen had gone out to dinner so upstairs was deserted. I followed Mark through the house and up to the second floor where he went directly to Jake’s room. Mark closed the door behind him and when I went up to it I was relieved to find that he had left it unlocked. When I entered and closed the door behind me I did hit the button on the knob to make sure we would be left alone.
Mark was standing next to the twin bed Uncle had put in there for him he was wiping his face off with his shirt and I could see his hands shaking. As I closed the door he turned quickly around dropping the shirt.
“It’s just me.” I said quietly as I walked up to him.
“You okay little brother?”
Mark looked at me shaking his head.
“I don’t know I just kind of…” He shrugged helplessly. “I’m not right, I mean I know no one’s going to bother me but I just can’t calm down.”
“Come here Mark.”
I put my arms around him hugging him close to me, and as I did Mark put his head on my shoulder. We stood there like that for a couple of minutes during which I could feel his heart pounding and his arms trembling. I stroked his hair and told him that everything was fine, but he still seemed worked up as if his body couldn’t shut down. As I continued to hold him it dawned on me what he really needed. For a moment I hesitated it was a crazy idea we could… I stopped myself Mark needed his big sister. Besides dad wanted to upset my brother? Well then only fitting that his “little girl” calms him down the only way she knows how. I pulled back a little and lifting Marks face from my shoulder kissed him.
At first Mark started to try to pull away but I held the back of his head and kissed him harder. Mark began kissing me back slowly at first then much harder with a sense of urgency behind it. As we kissed I reached down and unsnapping his jeans started to tug them down. Mark pulled back.
“Are you nuts Sis?” He asked. “You have to get out…”
I put my finger to his lips. Then leaning forward replaced it once again with my mouth. Keeping my left arm around his shoulders I reached down and shoved my other hand into his underwear. Mark groaned into my mouth as I started stroking his rapidly hardening cock.
“Hmmm mmmm.” I encouraged him as I pushed my tongue into his mouth. Once again it seemed as if he were trying to resist but as my tongue played across his lips I felt Mark’s will dissolve; as his mouth opened allowing my tongue to find his I could feel his arms tighten around my waist crushing me against him. My hand was still in his pants playing with his swollen cock and as I let my hand go further down and caress his balls he removed his mouth from mine and grabbing my hair pulled my head back and started covering my neck with hot desperate kisses.
“Yeah there you go little brother,” I breathed, “You let your big sister make it all better.”
Mark’s hands dropped down and tugged at my sweater. I lifted my arms and as soon as he lifted the sweater over my head I pulled the cups of my bra down allowing my small but perfectly shaped tits to pop out. Tossing the sweater aside Mark immediately bent his head to my right tit sucking hard as his fingers found my left nipple. I let out a low moan my brothers tongue was swirling across my nipple felt incredible, but we didn’t have a lot of time. Reluctantly I pulled my tit from his mouth Mark started to protest until I dropped down to my knees and yanking his jeans and underwear down eagerly took his cock into my mouth. Holding his hips I took him all the way down in one motion and after shaking my head back and forth as I swirled my tongue around the base of his shaft I started sucking him in and out rapidly.
Mark reached down and grabbing handfuls of my hair started fucking my mouth. I thought about letting him cum like that, just shoot his hot fucking cum down my throat, but at this point I was pretty damn worked up myself and needed to feel my little brothers cock inside of my over heated pussy. Removing my mouth from his cock I stood up and after quickly pulling my jeans and panties down to my knees bent over the side of the bed.
“Go ahead little brother,” I said softly looking at him over my shoulder. “Take what you need.”
Mark didn’t have to be told twice. Grabbing my hips he stepped forward and slammed his huge prick deep into his big sisters willing pussy. I gasped as he entered me. Mark and I had been fucking for six months now but he was so fucking big there were still times when it hurt. This was one of them as Mark still on the adrenalin rush from downstairs was plowing into me like he had never had it before. I winced as his fingers dug into my hips so hard I knew there would be bruises tomorrow. I let my head hang down, my hair in my face and tried not to yelp every time he drove himself into me.
“Yeah that’s right Mark,” I told him lifting my head up so I could look back at him again. “You go ahead and give it to me.”
“I stopped and let out a squeal as my brother started hammering me even harder. Gasping between each word I continued;
“There you go little brother you give it to me. You take it all out on your big sister, that’s what I’m here for you… Ohhh”
I couldn’t speak anymore. Mark was fucking me so hard I had to grab the pillow and bite down on it so I wouldn’t start squealing. The bed itself was starting to make noise as my brother continued to mercilessly pound his sister’s tight little pussy. The thought of getting caught entered my mind and I’d be lying if in the heat of the moment that image didn’t turn me on somehow. As my brother fucked the shit out of me I pictured my father telling Mark to show what he had, well my little brother was showing me what he had! All of it, every fucking inch of it! Dad was afraid Mark would hurt me? If he only knew how fucking good my little brother really was to me. My hand dipped down between my legs and I started rapidly stroking my clit. Mark was starting to moan and somehow started fucking me even faster.