It’s a warm Saturday morning, May 17, 2025, and Hans, a 35-year-old Dutchman with a simmering desire, is preparing for the arrival of Hanneke, the younger sister of his wife, Anna. Hanneke, a 19-year-old transgirl, has transformed since Hans last saw her years ago when she was still presenting as male.
Anna mentions Hanneke’s journey with pride, describing her as a stunning young woman now, with long blonde hair, large breasts, and a confident aura. Hans feels a flicker of curiosity as Hanneke arrives at 15:17 at their Amsterdam home, her suitcase in tow. She’s breathtaking—her tight jeans hug her curves, a crop top reveals her ample cleavage, and her smile is both shy and radiant. Hans tries to focus on being a good host, but there’s an undeniable spark he can’t ignore.
The first day unfolds smoothly, filled with warmth and catching up. They share a homemade dinner of pasta and wine, and Hanneke talks about her studies in graphic design, her voice soft but animated, her intelligence shining through as she discusses her passion for art. Hans is captivated by her laugh, the way her blonde hair catches the light, and the subtle sway of her hips as she moves around the kitchen to help with dishes. Anna beams, happy to have her new sister visiting, but Hans’ thoughts wander. That night, as he lies beside Anna, he can’t stop picturing Hanneke’s large breasts, imagining the secret she hides beneath her jeans—a delicious cock he’s curious to explore. He pushes the thoughts aside, knowing it’s wrong, but the seed of desire has been planted.
Sunday morning dawns quietly. Anna heads to the market to pick up fresh produce, leaving Hans and Hanneke alone in the house. Hanneke is in the living room, sketching on her tablet, her crop top riding up slightly to show her toned stomach. Hans tries to focus on a newspaper, but his eyes keep drifting to her, noticing the curve of her ass in those tight jeans, the way her breasts strain against the fabric. The tension grows unbearable, and a reckless idea takes hold.
He mutters an excuse about checking something upstairs and slips into the guest room where Hanneke is staying. His heart pounds as he opens the laundry basket, searching for a piece of her. He finds it—a pair of black lace panties, still warm from her body, the scent of her arousal faint but intoxicating. He brings it to his nose, inhaling deeply, her musky sweetness mixed with a hint of her unique essence, and his cock hardens instantly in his pants, throbbing with need.
Lost in his forbidden fantasy, Hans doesn’t hear the door creak open. “Hans, what are you doing?!” Hanneke’s voice cuts through, sharp and shocked. She stands in the doorway, her blue eyes wide, her hands on her hips. Hans drops the panties, his face burning with shame, his erection still evident through his jeans. “Hanneke, I… I’m so sorry, I couldn’t help myself,” he stammers, his voice shaky. She stares at him, her expression a mix of anger and something else—curiosity, perhaps. “You’re disgusting,” she says, but there’s a playful lilt in her tone, a flicker of intrigue in her eyes. “If you wanted to know me that badly, why didn’t you just ask?” Hans swallows hard, his cock pulsing, and he takes a tentative step closer. “Can I… touch you?” he asks, his voice barely above a whisper.
Hanneke hesitates, her intelligent mind wrestling with her emotions. She crosses her arms, pushing her large breasts up, and bites her lip, her gaze darting between his face and the bulge in his pants. “This is so wrong,” she murmurs, her voice trembling with uncertainty, but after a long pause, she nods slowly, a hint of reluctance in her posture. “Fine, but this stays between us,” she says firmly, her eyes narrowing with a mix of caution and desire. Hans steps closer, his hands trembling as he reaches for her, his fingers brushing her slender waist. He leans in, kissing her neck softly, her blonde hair tickling his face as he breathes in her scent directly from her skin. She lets out a soft moan, her resistance beginning to crumble, and Hans takes it as permission to explore further.
His hands slide up her body, lifting her crop top to reveal her large breasts, the sight making his cock twitch harder. He cups them, his thumbs brushing her nipples, and she gasps, “Hans, we shouldn’t…” But her words trail off as he lowers his mouth, sucking gently on one nipple, his tongue swirling around the sensitive bud. Hanneke’s hands grip his shoulders, her body arching into him, her reluctance fading with each touch. He pulls her jeans down, revealing her black thong, and his breath catches as he sees her delicious cock, already semi-hard, straining against the fabric. He kneels, peeling the thong away, and her cock springs free, thick and beautiful, a bead of pre-cum glistening at the tip. “You’re gorgeous,” he whispers, his voice hoarse with desire, and he kisses the tip, tasting her sweetness.
Hanneke moans louder, her hands in his hair, and Hans can’t hold back. He stands, unbuttoning his jeans, his 18 cm cock springing out, hard and ready. Hanneke’s eyes widen, her reluctance now a distant memory as she whispers, “Fuck me, Hans.” He guides her to the bed, spreading her legs, and positions himself at her tight entrance, her ass ready for him. He pushes in slowly, her hole stretching around his cock, and she cries out, “Oh god, you’re big!” Hans groans, the tight heat overwhelming as he slides deeper, filling her completely. He starts thrusting, his cock gliding in and out, her ass clenching around him as she moans, “Yes, deeper!” The forbidden thrill makes it hotter, and Hanneke’s large breasts bounce with each thrust, her cock slapping against her stomach, leaking pre-cum.
The days that follow become a superheated week of lust. Monday morning, as Anna leaves for work, Hans and Hanneke sneak into the guest room, starting with soft kisses that deepen into hungry ones. Tuesday, Hans ties her wrists with a scarf, his dominant side emerging as he fucks her from behind, spanking her ass until it’s pink, her moans of “Harder, Hans!” echoing through the room. Her cock drips pre-cum onto the sheets, and he reaches around, stroking her, making her scream as she cums, her ass tightening around his cock. Wednesday, they move to the shower, hot water cascading over them as he fucks her against the tiles, her breasts pressed against the glass, her cock rubbing against his thigh as he pounds into her.
Thursday brings more exploration—Hans sucks her cock, taking her deep into his throat, her cum shooting into his mouth as she trembles, and then he fucks her again, her ass welcoming him eagerly now. Friday, they get bolder, fucking in the kitchen while Anna is out, Hanneke bent over the counter, her blonde hair swinging as he thrusts, her cock swinging with each movement, her moans filling the house. By Saturday, Hanneke is fully on board, climbing on top of him on the couch, riding his cock with wild abandon, her large breasts bouncing, her cock slapping against his stomach. “I want your cum, Hans!” she cries, and he can’t hold back, his cock erupting inside her, his hot cum filling her ass as she cums too, her cock spurting onto his chest, their bodies trembling together.
On the final day, Sunday, May 23, before Hanneke leaves, she gives Hans a lingering kiss. “I never expected this, but I’ll never forget it,” she says, her intelligent eyes now filled with mischief. Hans smiles, his cock stirring at the memory. Back in reality, this week with Hanneke remains a forbidden fantasy, one he’ll cherish forever—a week of steamy sex with his wife’s stunning trans sister.
