The next morning I’d forgotten that my little brother Tristan had found out my secret and was using it to blackmail me. That was until I picked up my phone and read the text message he’d sent me last night after I’d fallen asleep.
[Erin, my alarm isn’t working. Since you’re my slave now wake me up in the morning by crawling between my legs and sucking my fat cock. Make sure you’re naked too, I wanna see those fine titties when I open my eyes]
I stared at my screen, a pit of despair opening up in my stomach. I felt horrified, embarrassed, and defeated. It felt like my brother was relishing in humiliating me. We’d always had an unhealthy amount of sibling rivalry, and when our parents had gone away and left me in charge I had enjoyed having that power over him, but I’d only ever made him do chores. I’d never gone this far and I couldn’t believe that he was. Besides, I hadn’t been left in charge of him since he was 15, it had been years, he should have gotten over it by now.
I wanted to scream at him and tell him how disgusting he was. I felt a mix of emotions, anger, disgust, and embarrassment all bubbling up inside me. But what good would it do? He’d already won the battle of power between us and this was my only option if I wanted to get out of this situation in one piece. He’d said he would destroy the evidence he had if I obeyed him for the next 6 months. When that time came he was toast.
So I did what Tristan had commanded. Our parents had already left for work so we were home alone. I trudged dejectedly to Tristan’s bedroom and paused in the doorway. He lay on his back, legs sprawled and the duvet draped over his lower half. I shivered at the thought of what I was about to do, but I had no other choice.
I pulled my crop top over my head and dropped it on the floor letting my breasts bounce free. I hooked my thumbs into the waistband of my panties and slid them down my legs, stepping out of them and leaving them discarded next to my top. I approached the bed slowly, not wanting to wake him even though that was exactly what I was here to do. He looked so peaceful sleeping, so harmless. His eyes were closed and his lips were parted slightly. His defined chest rose and fell with each breath. He was a good-looking guy and had a great body, it made no sense that he would want to use me like this when he could get any girl to sleep with him.
I took hold of his duvet and peeled it back, flinging it to the far side of his bed, and revealing his naked lower body. I swallowed hard, my mouth was dry. His thick cock was flopped over his thigh, a basket of dark curls surrounding it. His balls sat tightly below, big and imposing. I felt my heart race, but I had to push my conflicted feelings away for now; Tristan was in control here, not me.
I moved closer to his bed, hovering above him, my heart racing. As I looked down at him, I absent-mindedly reached up and caressed my breast, my tongue flicking out to wet my lips. The hunger in me stirred, a hunger for gratification and pleasure that I never knew I had.
Carefully, I climbed onto the bed, positioning myself between his legs as instructed, and then I crawled up toward his groin. His cock was fatter than any I’d ever seen and it was still soft. But that didn’t change the fact that he was my little brother. My dark hair fell over his thighs and I pulled it back, tying it in a ponytail to keep it out of the way. I lowered my head again and the strong smell of his musk filled my nose. It had a strangely arousing effect on me and evoked a desire to serve and indulge.
I paused for a moment, hesitating, unsure of what was to come. Then I closed my eyes and swallowed hard before finally poking out my tongue and giving his dick a small lick. His cock twitched as if taken by surprise and I licked it again, this time for longer. I continued, exploring every inch of it with my tongue, licking as if my life depended on it. His dick started to grow and swell as I opened my mouth fully and engulfed it. His cock quivered and filled my mouth with a salty taste. I tasted his precum, and my body responded as I kept tasting him, my nipples hardening and my pussy tingling. His cock pulsed and throbbed as I sucked and licked it, my curiosity for his size and taste, my hunger and lust for his dominance making me wild.
I felt a sense of power as I heard his moans growing louder and louder. His hands grasped my hair and his hips started to thrust into me. I took it all, giving him the pleasure he wanted until he finally climaxed, his creamy cum flooding my mouth.
“Swallow it,” he commanded. He was now awake and his bright eyes were staring keenly my way, a smug smile tugging at one end of his lips.
I reluctantly did as I was told, my face burning with shame, but also arousal at the forbidden act I had just committed. His thick cum traveled down my throat, leaving a salty tang in its wake.
“Good girl,” he purred, his eyes gliding down to my breasts. “How do you feel, big sis?”
I didn’t know what to say. I felt exposed yet strangely energized. I felt a mix of emotions – desire, humiliation, and shame, all of which were making me crave more. “Dirty. Ashamed,” I said in a whisper.
“Good.” He said. “That means you won’t forget this anytime soon. You need to learn your place.”
I felt like I had been slapped in the face. He was right, though. I would never forget this.
“Now, give me those big tits,” he said.
I obeyed his command without hesitation, climbing over him and resting on his lap so he could grab and fondle my breasts. I could feel his soft sticky cock beneath my ass and it was already stiffening again. I looked down in shame as he used me like a toy, trying to deny the arousal and lust that was burning through me.
He grabbed my chin and forced me to look up at him. “You like it, don’t you,” he said. “There’s no shame in admitting that.”
I couldn’t deny it any longer. I shuddered and looked away but finally nodded in agreement.
“Good girl,” he said with a satisfied smirk.
He flicked his tongue over my nipple before sucking my breast into his mouth. He let out a small moan as he sucked me. I felt his fingers below, stroking and exploring my pussy. He found my clit and started to massage it, driving me crazy with pleasure. I let out a throaty moan, the feeling was too much for me to handle. I gyrated against his hand, pushing my pussy against him, feeling his stiff cock against my backside. I grabbed his head with both hands, pulling him against my chest, encouraging him to keep sucking, to keep using me.