Chapter 1: Egg Nog and Forbidden Glances
The Christmas Eve gathering was in full swing, the air thick with the scent of pine, cinnamon, and the dangerously sweet tang of egg nog. Cassie, usually the reserved older sister, found herself three glasses deep into the golden, creamy delight. Her tongue was looser than the ribbon on a poorly wrapped gift, and her words at the family table were drawing laughs—raucous, belly-deep ones. But her eyes, oh, they were fixed on something far more intoxicating than the drink in her hand.
Emily, her little sister, sat across the table, a vision in a scandalously skimpy Santa outfit. The red dress clung to her budding curves, the fluffy white trim teasingly high on her thighs, and a big white bow perched above her tight bust. Behind nerdy glasses and beneath a fluffy Santa cap, her innocent face glowed with a mischievous charm. Cassie’s gaze lingered too long, her thoughts straying to places darker than the winter night outside. She was close with Emily—too close, perhaps, for the thoughts that haunted her late at night.
“Pssst!” Emily’s voice cut through Cassie’s haze as she stumbled into the kitchen for another pour of egg nog. The younger girl had followed, her giggle as light as snowflakes. Cassie’s drunken stare devoured her sister’s angelic form before she managed a slurred, “Huh?”
“Give me some, too?” Emily pleaded, her brown eyes wide and daring.
Cassie pointed a wobbly finger at her sister’s face, her voice playful but sharp. “You, little miss, can’t handle this stuff.”
“Come on, I’m plenty grown up! It’s Christmas!” Emily pouted, pushing out her chest defiantly. “Feel them if you don’t believe me!”
Cassie’s breath hitched, her cock twitching beneath her jeans despite the alcohol’s numbing haze. “You can’t just go around offering people to cop a feel, Emmy!”
“Who said anything about copping a feel?” Emily shot back, her pout turning sly. “You’re my sister.”
Liquid courage surged through Cassie, and before she could stop herself, her hand dove down the front of Emily’s dress. Her fingers squeezed the petite, perky flesh, reveling in the lack of a bra, tracing every developing curve with a hunger she couldn’t suppress. Emily’s eyes widened in shock, but she didn’t pull away, standing frozen in the kitchen as her sister groped her shamelessly.
When Cassie finally pulled back, Emily shook her head as if to clear it. “Whoa… now you *have* to give me some!”
Two big glasses of egg nog later, Emily’s cheeks were flushed, her voice a tipsy purr. “Nowww, you hafta let me touch yours!”
Cassie’s better judgment had long since fled the scene. She glanced at the doorway leading to the noisy family gathering, then back at Emily. “Your room. Now.”
“Huh?” Emily blinked, but Cassie was already marching her through the hallway to her cutesy nerdcave of a bedroom—fairy lights twinkling, anime posters on the walls, and bedsheets adorned with some obscure Japanese print. No protests came as Cassie closed the door behind them, the lock clicking with a finality that sent a shiver down her spine.
She lowered her arms, offering her own chest with a smirk. “Go on, then.” Emily’s small hands explored through Cassie’s top, tentative at first, then bolder. But it was when her sister’s gaze dropped, and her hand slid to the unmistakable bulge in Cassie’s jeans, that the air turned electric.
“Emmy,” Cassie warned, her voice low and rough.
“What?” Emily giggled, her fingers teasing, daring her sister to act. “You started this game.”
Cassie broke away only to ensure the door was secure, her mind racing with thoughts too wicked for Christmas Eve. Old enough for a lock, old enough for a cock, she mused darkly, her inebriated state fueling her desire. Emily sat on the bed, her head spinning—or was she waiting for more?
In an instant, they were kissing, lips crashing with a forbidden heat. Cassie shoved her tongue into Emily’s sweet mouth, feeling the younger girl push back with equal fervor. It wasn’t enough. She needed more—her body was on fire, her cock hard and throbbing with a need that egg nog couldn’t dull.
“H-hey, that’s… too far…” Emily mumbled as Cassie pushed up her Santa dress, revealing striped panties in bold, proud colors. But her protest was weak, and when Cassie’s fingers found her dripping wet, there was no stopping. She had to taste, had to feel that slick heat against her tongue. Emily moaned softly, overwhelmed, her body trembling beneath the onslaught of sensation.
Cassie’s restraint was fraying, her breath panting as she pulled back, her cock now free and aching. She lined herself up, feeling the wet invitation of Emily’s pussy, her mind a haze of lust and possession. Any moment now, she’d claim her sister in the most forbidden way, their bodies locked in a dance as old as sin itself.
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