Late-Night Space Station Climax: Taken from Behind by a Busty Astronaut

The zero-gravity living module on the International Space Station is always quiet and lonely. I'm Akira, a rookie astronaut in my early 30s. On Earth, I'm the ultimate loser with women, struggling even to talk to girls properly. With my hairy body, glasses, and awkward smile, I've never managed to get a girlfriend. Even after coming to space, between missions I just float alone gazing at the stars. Sweat beads up and my breathing grows heavy, but no one notices. What changed my routine was veteran astronaut Serena. She's an American in her late 20s whom I meet often during missions. Blonde ponytail, sharp blue eyes, toned body. But what stands out most are her breasts. Those G-cup breasts look ready to burst, jiggling softly even in zero gravity, straining the zipper of her spacesuit. From the first time I saw her test photo, my cock twitched in response. (What would it feel like to touch those huge breasts...? Without gravity, if I squeezed them, they might swallow my whole face.) After finishing a late-night shift, I ran into Serena in the living module. The lights were dim, blue LEDs glowing on the walls. Tired, I floated while sipping a nutrient drink through a straw. "Hey, Akira. Late night again?" Serena's voice echoed. She anchored her feet to the wall and drifted toward me. The top of her suit was slightly open, casting shadows in her cleavage. I quickly looked away, but my heart pounded. "Y-yeah. You too, Serena? Thanks for your hard work on the mission." My voice cracked. Our usual talks were only mission-related. She was always cool, treating rookies like me as if we were invisible. But tonight felt different. She smiled softly and floated beside me. "You look tense. Want to chat? No one's around." In zero gravity our bodies drifted too close, and the scent of her shampoo tickled my nose. I could only nod and start with small talk about Earth. She turned out to be surprisingly chatty, laughing as she shared stories of past mission failures. I gradually opened up, spilling bits of my lonely life on the ground. (Serena's lips look so soft. If we kissed, would our saliva float and stick to my face?) As time passed, the conversation deepened. Suddenly she placed a hand on my shoulder. Warm, sending electricity through me. "Akira, you're cute when you're nervous. Ever been with a woman up here?" My face flushed. When I shook my head, her eyes lit up. "Me neither, in space. But... want to try?" I tried to refuse. Inside I wanted to shout that someone like me wasn't good enough. But Serena's gaze was intense, her blue eyes piercing me. Unable to resist, I nodded. Her smile widened. That was the beginning. Serena took my hand and moved us to a corner of the module. While our bodies floated weightlessly, she unzipped her suit. The fabric parted and her G-cup breasts spilled out. Without gravity they remained round and full, swaying slowly. Her pink areolas were large, nipples stiff and erect. My cock hardened instantly, painfully straining against my pants. (Wow, they're huge... Exactly like my fantasies. I want to touch them, suck them.) "Touch me, Akira." Her voice was sweet. I hesitantly reached out. My fingers sank into her breasts. Soft, like jelly, they bounced back in zero gravity and clung to my palm. A little sweat beaded up, making my fingertips slide. Serena undressed me. Seeing my hairy chest, she chuckled. "Hairy, but hot." Her hand slid to my crotch and gripped my cock. Precum leaked from the tip, coating her fingers. The sticky sensation felt good. Unable to hold back, I brought my mouth to her nipple and sucked. It tasted faintly sweet, like milk. In zero gravity my saliva floated, forming tiny bubbles that clung to her breast. Her moans echoed through the module. "Ah... good boy." She pushed me against the wall and kissed me. Our tongues tangled, saliva stretching into threads. Bodily fluids drifted in zero gravity, smearing across our faces. Sweaty breaths mingled; it was hard to breathe, yet the excitement wouldn't stop. (This has to be a dream. Serena's tongue is hot and slick. My virgin cock feels ready to explode.) Serena rotated her body and moved behind me. From the back. She secured herself like a strap and pressed her hips against my ass. Wait, from behind? She pulled something out... a vibrator? Or some special zero-g toy. Something large pressed against my rear. "Relax, Akira. I'll make you feel good." Words of refusal caught in my throat. Her gaze burned into my back. Trembling, I accepted. Her huge breasts pressed against my back, their soft weight unmistakable. Sweat made them stick, hard to peel away. The toy slid in slowly. Coated in slippery lube, it glided easily in zero gravity. It stimulated my prostate; fluid dripped from my cock, white droplets floating through the module. "Oh god, tight... you're a virgin, right? So cute." Serena's movements grew rougher. Taken from behind, my body floated and swayed. Each time her breasts slapped my back they made a soft smack. Sweat sprayed, wetting my skin. My breathing turned ragged, moans escaping. "Ah, Serena... it's too much, feels so good..." (This is crazy—getting made to come from behind even though I'm a guy. My cock is twitching; I'm going to shoot. The feel of those huge breasts is incredible.) Her hand wrapped around my cock and began stroking. Wet sounds filled the air. The toy's thrusts sped up; my vision wavered. I nearly spun in zero gravity, but her arms held me steady. Climax hit. My cock pulsed, shooting thick ropes of cum. White fluid arced and floated. Serena's hand was coated, the sticky sensation clear. I came hard, mind blanking. The moment I lost my virginity, my body trembled in zero gravity. "Good job, Akira. You came so much." Serena withdrew the toy and embraced me. Burying my face in her breasts, I smelled sweat mixed with that milky scent. We floated there until our breathing calmed. That night we repeated it many times. In the shower module she had me perform oral while washing. Her pussy was plump in zero gravity, clit standing out. When I licked it, her arousal floated, sweet and tangy. Watching her climax and squirt excited me further. We did paizuri too. Sliding my cock between her G-cup breasts, the soft flesh enveloped me slickly. Moving them up and down in zero gravity created erotic waves. I came again, painting her chest with cum. The white streaks floated beautifully, almost poetic. In cowgirl position she rode me, her huge breasts falling onto my face. I thrust upward while squeezing them, flesh slapping. Our sweaty bodies stuck together, requiring effort to separate. Her pussy gripped my cock tightly, hot and intense. I came five times that night. Serena laughed and said, "You're addicted to my tits, huh?" I could only nod, completely obsessed with her breasts. Even now, back on Earth, I think of that night every evening. Serena's huge breasts, the sticky eroticism of zero gravity. My fantasies never stop. Romance may be impossible, but at least I have these memories to satisfy me during lonely nights, shining like stars in space.