Zero Gravity Sex with Busty Scientist in the Space Simulator

On a summer evening, the twilight light streamed in through the windows of the research facility. I'm Kenta, an ordinary man in his mid-thirties. I was called to this facility as a subject for a scientific experiment. I heard it was just a matter of entering a room that simulates a zero-gravity state for a space development project. The reward was good, and it sounded interesting, so I accepted. I'm not planning to become an astronaut or anything, but it felt like a little adventure.

The inside of the facility was cool with the air conditioning running. It was a stark contrast to the sweaty summer heat outside. I had changed into a white jumpsuit and was waiting in the waiting room. A faint smell of sweat lingered, but I didn't mind. Sitting across from me was Aiko. She was the aerospace engineer in charge of this experiment. Probably in her late twenties. She had black hair in a ponytail and wore intellectual glasses. The blouse under her lab coat emphasized her figure, and my eyes naturally drifted that way.

(Wow, Aiko's breasts are huge...)

Her chest looked like it had to be at least a G-cup. The blouse was stretched tight, with cleavage peeking through the gaps between the buttons. The word "busty" fit perfectly, and they swayed heavily even while she sat. It was unfair for such an explosive bust to be paired with her youthful face. I quickly looked away, but my heart was pounding. For someone like me with almost no experience with women, just being near such a beauty made me tense.

Aiko stood up and spoke to me.

"Kenta, are you ready? Today we'll be testing the sensation of zero gravity in the space simulator. We'll collect data on how your body moves in a floating state."

Her voice was bright and professional. I nodded and stood up. The simulator room was next door. When I opened the door, it was a wide space with white walls and special equipment on the ceiling and floor. It was just like a sci-fi movie. Cold air flowed in, making me forget the muggy summer outside.

"Please go inside and sit on the seat. Once you put on the helmet, the simulation will start. I'll watch from the monitor, but I can come in if needed."

Aiko explained. I sat on the seat and put on the helmet. When the switch was flipped, the entire room began to rotate slowly. A floating sensation came over my body. It was as if gravity had disappeared. It really felt like being in space, and I was excited.

At first, it was just floating. When I moved my limbs, my body drifted gently. Touching the wall made me bounce back slowly. Aiko's voice came through the headset.

"Are you okay? How's your condition?"

"Yeah, it's fun. It's like real space."

I answered with a laugh. Her voice was gentle and reassuring. The experiment went smoothly, and we continued the floating test for about thirty minutes. I wasn't sweating, but my body felt hot with excitement. The twilight light came in through the window, dyeing the room orange. The extraordinary sensation stirred my imagination.

(Being alone with Aiko in a place like this... well, through the monitor, though.)

Suddenly, I heard the sound of the door opening. Aiko came in. She was also wearing a jumpsuit and approached while floating. Her large breasts swayed bouncily inside the suit. In zero gravity, they floated gently as if weightless.

"Kenta, I'm coming in to collect data directly. Let's adjust the body-fixing device together."

She drifted close to me. Our hands touched, and I felt a jolt. Her body heat transmitted to me. She smelled sweet, like summer, with a hint of shampoo. In the floating state, our bodies lightly bumped into each other. Her breasts brushed against my arm, spreading a soft sensation.

(Wow, I touched Aiko's huge breasts... they're big and soft.)

I hurriedly apologized.

"S-sorry!"

"It's fine. In zero gravity, it's hard to control."

Aiko laughed. Her eyes were gentle, easing my tension. But inside, my fantasies swelled. As a virgin, I couldn't help imagining erotic things in this situation. Her massive breasts floated closer to my face. The deep cleavage mixed with a sweet scent and a hint of sweat.

As the experiment progressed, Aiko clung to me to support my body. It was supposedly a floating fixation pose, but her breasts pressed firmly against my chest. The weight of her G-cup breasts, which shouldn't exist in zero gravity, pushed softly against me. In zero gravity, her breasts swayed gently, enveloping my body.

"This way, we stabilize the body. Can you feel it?"

Her breath hit my ear. It was hot. My groin was slowly getting hard. Inside the suit, my cock was pushing against my underwear. It was embarrassing, but I couldn't stop it.

(Aiko's breasts, this close... I want to squeeze them.)

I couldn't hold back and reached out. Lightly, I touched her waist. In zero gravity, there was no resistance. Aiko looked surprised but smiled.

"Kenta... that's not part of the experiment, is it?"

But she didn't pull away. Instead, she drew closer. The atmosphere suddenly changed from friendly trust. Her huge breasts floated in front of my face. In zero gravity, they swayed as if slowly rotating. It was poetic, like a soft, glowing nebula in space.

"But why not enjoy this extraordinary exploration?"

Aiko's voice turned sweet. I could only nod and placed my hands on her breasts. Through the suit, I grabbed her massive chest. They were huge. My fingers sank in. The volume of her G-cup filled my palms. Soft like jelly. In zero gravity, pressing them made them spread gently.

(Damn, Aiko's explosive breasts are amazing... A virgin like me touching such a beauty's chest.)

She unzipped her suit. Her blouse appeared, revealing her bra. It was black lace, supporting her huge breasts but looking ready to overflow. When Aiko removed her bra, her breasts bounced out. In zero gravity, they floated up slowly. Her nipples were pink and perky. Sweat droplets floated, sparkling.

My breathing grew ragged with excitement. My cock was painfully hard. Aiko began removing my suit. While floating, our bodies entwined. Her hands stroked my chest and pinched my nipples. A tingling pleasure ran through me.

"Kenta, you're excited. Look, this is getting hard too."

She reached for my lower body and pulled out my cock from the suit. It was thick, with veins bulging. The head was swollen red, with precum forming a string. In zero gravity, my cock floated gently. Aiko laughed and gripped it with her hand. Her warm hand stroked slowly.

(Wow, a handjob from a woman... Aiko's fingers are slender and feel good.)

I couldn't hold back and buried my face in her huge breasts. I pressed my nose into the cleavage. The soft wall of flesh enveloped my cheeks. I took a nipple into my mouth and sucked. The fantasy of milk coming out maxed out my excitement. Aiko moaned.

"Ah, Kenta... if you suck that hard, I'll get weird."

Her voice was sweet. I rolled her nipple with my tongue. The hardened nipple bounced in my mouth. While kneading her entire massive breasts, I pressed them together with both hands, begging for a titjob. Aiko sandwiched my cock between her breasts. In zero gravity, her breasts floated lightly, gently enveloping my cock. The slippery mix of sweat and precum made it smooth.

(A titjob, an explosive-breast titjob... The feel of her G-cup is like a dream.)

My cock was buried in the breast flesh. Moving up and down produced wet sounds. Aiko pressed her nipples against it to increase friction. My hips moved on their own. In zero gravity, our bodies seemed to rotate. Her huge breasts swayed like waves. My vision filled with a sea of breasts.

"Aiko, more... harder."

My voice trembled. She accelerated. Her breasts reached the base of my cock, creating unbearable pressure. The head emerged from the cleavage, and her tongue flicked at it. Hot saliva dripped. In zero gravity, the liquid floated and stuck to my body.

I reached my limit. I came. Thick white semen spurted out. It floated and scattered around the room. It splattered all over Aiko's huge breasts. She laughed and wiped it with her finger.

"Wow, you came a lot. Kenta, were you pent up?"

I was embarrassed, but my excitement wouldn't stop. Now it was my turn. I floated Aiko and removed all her clothes. Her lower body was exposed. Her pussy was smooth, with pink lips parted. Her clit was plump and glistening with wetness. In zero gravity, her love juices formed floating droplets.

(Aiko's pussy is beautiful... Is it okay for a virgin like me to touch it?)

I reached out with my finger and lightly pressed her clit. She twitched. I inserted my finger inside her pussy. It was slippery and hot. The walls clung with folds. Aiko moaned and pulled my head closer.

"Kenta, there... lick it."

I brought my face close. Her pussy had a sweet and sour scent. I stuck out my tongue and licked her clit. Her hips swayed in zero gravity. Love juices flowed into my mouth. Salty and exciting. I inserted two fingers and stimulated her G-spot. Aiko's voice rose as if she was about to come.

"Ah, ahn! Good, Kenta, you're good at this..."

Her huge breasts swayed violently. In zero gravity, waves spread through them. I hardened my cock, ready for insertion. I fixed Aiko and pressed my cock against her pussy. The head pushed open her lips. It slid in with a wet sound. Hot inner walls squeezed my cock.

(Sex, zero-gravity sex... Aiko's explosive breasts press against my chest.)

I moved my hips. In zero gravity, our bodies entwined. Like cowgirl position, she was on top, rocking. Her huge breasts slapped my face. Wet sounds echoed. Her pussy swallowed my cock, and the thrusting was smooth. In zero gravity, it went deep without resistance.

"Aiko, it feels good... your pussy is tight."

I moaned. She ground her hips. Her clit rubbed against my body. While kneading her breasts, I pinched her nipples. Aiko's body trembled and she came.

"I'm coming! Kenta, together!"

I reached my limit too. My cock twitched and I came inside her. Semen poured into her pussy. The afterglow lingered long in zero gravity. Our bodies floated gently.

We repeated it many times after that. Floating like in a bath, she gave me a blowjob. Aiko took my cock in her mouth. In zero gravity, her head rotated for deepthroat. It went to the back of her throat, and she sucked while gagging. I came again. Semen floated from her mouth.

Next was from behind. I grabbed her ass and thrust my cock in. Love juices splashed from her pussy. Her huge breasts didn't sag but floated and swayed. I came about five times in one night. Overexcited like a virgin's fantasy.

When the experiment ended, the room returned to normal. Twilight had turned to night. Aiko dressed and smiled.

"Kenta, we got good data. Let's do another experiment."

I nodded, but inside I was fully satisfied. The extraordinary exploration left the floating sensation of her huge breasts unforgettable. Ever since, I've been masturbating every night recalling that feeling. The sight of Aiko's explosive breasts swaying in zero gravity stirs my fantasies. It doesn't feel real, but that's what makes it the best.

(Again, in that simulator... I want to do even more erotic things with Aiko.)

The summer night breeze blew outside the facility. My life felt like it had changed a little.