I watched in silence as Tim leaned forward and took Sophia's swollen nipple into his mouth like he had every right to it.
His lips sealed around the pink, glistening bud and he began to suck greedily, cheeks hollowing with every pull. A soft, wet sound filled the room every time he drew milk from her breast. Sophia's head tilted back slightly, her lips parting in a quiet moan as her fingers gently combed through his hair, treating him like he was still her little baby even while he drank from her like a man starved.
Her other breast hung heavy and full beside the one he was sucking, the nipple already leaking a thin, pearly trail of milk down the curve of her skin. Tim reached up without breaking his rhythm and squeezed it, his fingers sinking into the soft, warm flesh.
A small spurt of milk shot out and ran down over his knuckles. The sight made my cock twitch hard in my pants. I could still taste her sweetness from the last time I had my mouth on her, and watching someone else drink what used to feel like mine made something ugly twist in my chest.
Sophia's breathing grew heavier. Every time Tim sucked too hard or bit down gently, her body gave a small, helpless jolt and another soft moan slipped past her lips.
"Tim… that's enough," she finally breathed, her voice shaky and warm at the same time. Her chest rose and fell quickly, milk still glistening on both of her swollen nipples.
Tim pulled back slowly, a thin string of milk connecting his lips to her breast before it broke. White droplets clung to his chin and lower lip. He wiped his mouth with the back of his hand, then turned his head just enough to look at me and gave me a slow, smug wink.
"Big sis Sophia… your milk was really tasty," he said loudly, licking his lips like he was savoring the taste.
Sophia's face burned a deeper shade of red. She quickly covered her chest with both arms, trying to hide her leaking breasts as she looked away in embarrassment.
"Don't say it like that…" she mumbled, her voice small and flustered.
I picked up my controller again and sat back down, jaw tight. Tim's smug expression stayed on his face as he grabbed his own controller like nothing had happened.
We started another race. This time I was determined not to lose. I leaned forward, gripping the controller so hard my knuckles turned white, eyes locked on the screen. Tim was good, but I was better when I actually tried. We stayed neck and neck for most of the race, the finish line getting closer with every second. My heart was pounding. At the very last second, I pulled ahead.
"Fuck yeah!" I shouted as my car crossed the finish line first.
Tim came in second. Sophia finished third. I turned and flipped him off with a wide grin, unable to hide how good it felt to finally beat him at something.
The look on Tim's face was priceless. He pouted like a child who had his toy taken away, lips pushed out in dramatic disappointment.
"Alex! Language," Sophia scolded immediately, turning to me with a serious expression.
"Sorry… that came out on its own," I muttered, feeling heat crawl up my neck.
"Don't use those kinds of words in front of Tim," she said firmly, though her cheeks were still flushed from earlier.
I nodded, properly ashamed. "Sorry."
I stood up, controller still in my hand. "I won, so I get to make a wish now, right?"
Sophia looked up at me from the floor. "Yeah… what do you wish for?"
I already knew exactly what I wanted. I was still craving the taste of her milk. The memory of it was fresh on my tongue and I wanted more. But before I could open my mouth, Tim suddenly stood up and walked over to me. He grabbed my shoulder and leaned in close, his lips brushing against my ear as he whispered something only I could hear.
My stomach dropped.
He was blackmailing me. Using the video. Telling me exactly what wish I had to make.
Even though I had won fair and square, the wish was going to be his. I swallowed hard and stepped closer to Sophia while Tim walked back to his spot on the floor, sitting down with a wide, satisfied grin.
Sophia looked between us, confused. "Hmm? What's going on between you two?"
Tim just crossed his fingers and smiled innocently. "It's a secret."
I took a shaky breath and looked at my older sister.
"I want you to lie down on the bed."
Sophia blinked, clearly caught off guard. "Lie… on the bed…?"
Tim spoke up from behind me, voice casual but firm. "Sophia, big sis, you can't say no. You already agreed to the rules."
Sophia looked at him for a moment, then gave a small nod. "You're right… I'll do it."
She stood up and moved to the bed, lying down on her back. Her heavy breasts shifted and jiggled lewdly with the movement, the soft flesh settling against her chest as she got comfortable. She looked up at me with confused, slightly nervous eyes, clearly wondering what I was going to ask her to do next.
I hesitated for a second before speaking again.
"Big sis… turn around."
Without hesitation, Sophia rolled over onto her stomach. The moment she did, her round, perfect ass lifted slightly, the full, pale cheeks looking like two soft, heavy mounds. They wobbled gently with the motion, the thin fabric of her sundress riding up.
Sophia glanced back over her shoulder at me. "Like this…?"
"Yeah…" I swallowed. "Just… can you lift your butt up a little?"
She blinked in surprise but did as I asked, raising her hips so her ass pushed up higher. The movement made her panties stretch tighter across her pussy and gave me a clear view of the soft, pale skin of her ass cheeks. Tim was staring openly now, eyes glued to her rear, practically drooling.
Sophia's voice came out quiet and unsure. "Robbie… isn't that too much?"
Before I could answer, Tim spoke up from the side, voice smooth and casual.
"Come on, big sis. It's just a game. You already said you'd do whatever the winner wants."
Sophia bit her lip, then slowly lowered her face into the pillow, closing her eyes like she was bracing herself.
I stood behind her, heart hammering in my chest. My hand was raised, ready to bring it down on her ass… but before I could move, Tim suddenly pushed me aside. I almost lost my balance.
I opened my mouth to protest, but he quickly brought a finger to his lips, shushing me with a smug look. Then he took my place, standing right behind Sophia's raised ass. He rubbed his hands together slowly, eyes locked on her pale cheeks, before raising one hand high.
Smack!
The sound was loud and sharp. Sophia's body jerked forward as her ass cheeks rippled from the impact, a surprised, breathy moan slipping out of her mouth.
"Ahh—!"
Her soft flesh jiggled beautifully from the spank, the pale skin already starting to turn a faint shade of pink where Tim's hand had landed. She buried her face deeper into the pillow, her back arching slightly as the sting spread across her skin.
Tim grinned wider, clearly enjoying himself, and raised his hand again.
To be continued…
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