Late Night Indoor Pool: Busty Instructor's Massive Breast Press

It was a hot and humid summer night. I was a late-twenties single guy working as a night-shift security guard at a factory. I'd never had a girlfriend, and my daily routine was just work followed by a lonely reflection session at home. After my shift ended and I was covered in sweat, I decided to stop by the local community center's indoor pool. I figured it would be empty at this late hour.

The pool lights were dimmed, and the quiet water surface glowed blue. I changed into my swimsuit in the locker room and stood at the poolside. No one was there. Perfect, I had it all to myself. I planned to swim hard and blow off some stress.

The cool sensation enveloped my body as I entered the water. It felt great. After a few laps of freestyle, a voice suddenly called out from the poolside.

"Working late, aren't you? Your swimming form looks good."

I turned to see a woman standing there. She wore what looked like an instructor's uniform, with a name badge reading "Yumina." She appeared to be in her thirties, with black hair in a ponytail and a refreshing smile. But my eyes locked onto her chest. Her shirt was stretched tight, and her massive G-cup breasts swayed heavily like two large watermelons. The deep cleavage looked ready to burst the fabric. Those huge breasts were unfair at a summer pool. (Wow, what would it feel like to touch them? So soft, like sinking in...)

I quickly looked away. "Oh, thank you. I just stopped by after work."

Yumina smiled and crouched at the poolside. "I'm finishing my shift and tidying up too. Would you like a quick lesson? It's late, but I can make an exception."

A private lesson? My heart pounded. No reason to refuse. "Sure, I'd like that."

She changed into a swimsuit and entered the pool. The black one-piece clung tightly to her body, clearly outlining her massive breasts and even hinting at the tips. I swallowed hard. (This is bad. I might get hard right here. Stay calm...)

The lesson began with basic strokes. Yumina swam alongside me, staying close. Her pale skin shimmered in the water, and a sweet shampoo scent drifted over. Every time she whispered "Extend your arms more" near my ear, my body grew hotter.

The guidance gradually shifted to closer contact in the water. "For backstroke form, it's like this."

She moved behind me and pressed her body close, as if embracing me. Suddenly, those G-cup breasts pushed firmly against my back. Soft. Incredibly soft, sinking into my skin beyond the water's resistance. It felt like two giant marshmallows melting together. (Oh no... the weight and warmth of these huge breasts. The curves spreading along my spine. My cock is twitching in my swimsuit...)

I caught my breath. "Ah, yeah, got it..."

But Yumina didn't stop. "Support me more firmly. Feel my breasts pressing and keep your balance."

I felt it intensely! Her nipples were hard against my back, poking through the fabric with each movement. Her massive breasts enveloped my body, rippling with the water. My own nipples began to tingle from the friction. The stimulation was too much for a virgin like me. (My nipples are so hard... Are Yumina's nipples this stiff because of me? Just imagining it makes precum leak from my cock. This underwater eroticism feels like a dream...)

As the lesson continued, my excitement became uncontrollable. My swimsuit bulged tightly, rubbing dangerously with every stroke. Yumina seemed aware and pressed closer. "Now for the flutter kick. Match my legs."

Her thighs entwined with mine, and her huge breasts pressed against my chest. My face nearly buried in her G-cup cleavage, the soft flesh brushing my cheeks. The sound of water mixed with her breathing in my ears. "Hehe, you're getting hard. Just relax."

Hard? She meant my cock! Yumina's hand reached around my waist underwater. It was like a titjob with full-body contact. Her massive breasts sandwiched my chest, nipples rubbing together. Mine were already rock hard, sending electric pleasure through me. "Ah, Yumina..."

She whispered, "Shh. It's quiet underwater, right? Feel it more."

(I am feeling it... I want to thrust my cock between those huge breasts. The soft flesh would wrap around it, sliding slickly. I'm so close to cumming...)

Unable to hold back, I moved my hips underwater. My cock brushed against Yumina's massive breasts. Even through fabric, the softness transmitted, making my tip throb. When I pinched her nipple with my fingers, her body trembled. "Nn... That's sensitive..."

My arousal peaked. Even in water, my cock was at its limit. Yumina pressed even closer, rubbing her breasts in a titjob motion. The G-cup flesh squeezed my cock and moved up and down. The water resistance made it slow but incredibly erotic. Her fingers rolled my nipples, keeping them rock hard. "Ah, Yumina, my nipples... they're so hard..."

"It's fine, feel it more with my huge breasts," she said sweetly.

(Oh, I can't take this. My cock tip is burning. I'm imagining her pussy... Yumina's pussy must be soft and would swallow my cock. Her clit would be hard too...)

I edged multiple times. The first from nipple play, my cock twitching and leaking into the water. The second from the titjob press, my tip rubbing her cleavage until the excitement felt overwhelming. The third came when her lips touched my neck and her tongue licked like cunnilingus, making my hips buck on their own.

Finally, climax. Yumina guided me to the poolside for full underwater contact. Her G-cups completely enveloped my cock, stroking it like a titjob. "Cum, let it all out."

I couldn't hold back and ejaculated underwater. Thick spurts overflowed from my swimsuit as my cock spasmed. I buried my face in Yumina's massive breasts and sucked her nipples. Hers were hard too, tasting sweet somehow. (Amazing... I want to sink into this sea of soft huge breasts forever...)

Afterward, I climbed out and caught my breath in the locker room. Yumina smiled and said, "Come again. The late-night private lessons are always available." I could only nod. My body was satisfied, but my mind was in turmoil. For a virgin like me, that tactile temptation was unforgettable.

Since then, I've been masturbating every night recalling that sensation. The weight of Yumina's G-cups, the hardness of her nipples, the slickness underwater... Romance might be impossible, but this excitement is my treasure. The summer nights continue.