Busty Mountain Onsen Encounter: Enveloped in Cleavage at a Hidden Hot Spring

Deep in the mountains during spring, I arrived at an old wooden hot spring inn at dusk. I'm Kyouya, a geothermal energy researcher whose body has taken a beating from endless desk work and field surveys. A single man in his mid-30s, I can't even remember the last time I had a girlfriend. I picked this hidden hot spring specifically to ease my work fatigue. The quiet mountain path was filled with dancing cherry blossom petals, and the inn's rustic old-house atmosphere helped calm my mind.

After checking in, I ate dinner in my room while it was still warm from the bath. The local sake the proprietress recommended tasted great, and I got pleasantly tipsy. I slept soundly through the night and woke around 5 a.m. It was still dim outside, with birds chirping. I thought a private open-air bath would be perfect for loosening up my tired body. I had it reserved, so no one should be there this early.

Wearing a yukata, I headed to the outdoor bath. As I walked the stone path, a cool spring breeze brushed my cheeks and the scent of steam drifted through the air. Morning mist rose between the trees, creating a dreamy atmosphere. When I opened the door, steam rose from the far side of the tub and the rocky surfaces felt inviting.

(Alright, time to soak alone and relax.)

I stripped and stepped into the water. The hot spring enveloped my body and the stiffness in my shoulders began to melt away. I closed my eyes and relaxed until the sound of the door startled me. Someone's here? I opened my eyes in a panic to see a woman standing there.

She introduced herself as Riko, a herbal tea blender visiting for a therapeutic stay. She looked to be in her late twenties, with black hair in a ponytail and soft, fair skin. Her body was voluptuous, especially her prominent chest. She sat on the edge of the tub, loosened her yukata, and revealed breasts so full they seemed ready to spill out. They looked like G-cups, soft and swaying, with deep cleavage glowing in the morning light.

(Wow, they're huge… I've never seen breasts like that. I can't look away.)

I quickly averted my eyes, but my heart pounded. Riko looked surprised for a moment, then smiled.

"Sorry, our reservations overlapped. Even though it's private… I was already in, but is it okay?"

Her voice was gentle, carrying a hint of herbal fragrance. I shrank in the water, feeling my cheeks heat up.

"No, I'm the one who's sorry. I'm Kyouya. Work has worn me out, so I came early. Riko, right? Sorry for intruding."

Riko slowly entered the tub and sat beside me. She was close. The sound of her shoulders sinking into the water echoed, and ripples touched my body. Conversation began. Riko talked about herbal teas and how they help with stress. I complained about the hardships of geothermal research. We found unexpected common ground, and laughter filled the open-air bath.

The spring morning breeze rustled the trees, and cherry blossom petals floated on the water. Riko's yukata slipped slightly, revealing even deeper cleavage. Her soft skin glistened moistly from the steam.

(I wonder what those breasts would feel like. Soft and sinking… No, stop imagining weird things.)

Riko noticed my gaze and chuckled.

"You look tired, Kyouya. Your shoulders seem stiff. Would you like a massage? It's a perk for onsen guests."

Her kind words made my heart waver. Her trustworthy nature helped me relax as we talked. Riko moved behind me and began kneading my shoulders. Her warm hands felt good. Then her breasts lightly brushed my back. The soft sensation shot through me like electricity.

"Thank you, Riko. That feels nice…"

My voice rose. Riko's breath was close, mixed with a sweet herbal scent. Our conversation grew more intimate as we shared feelings of loneliness from our daily lives. Empathy formed and the distance between us shrank.

Then Riko whispered,

"Kyouya, relax more. Why don't you use my breasts as a pillow? They're warm and pleasant in the water."

(What? Seriously? That sounds like a dream… but a chance like this shouldn't come to a virgin like me.)

I hesitated but nodded. Riko leaned against the edge of the tub and lifted her body slightly. Her large breasts rose from the water, droplets running down the valley between them. The natural weight of her G-cups pressed them together invitingly. Pink areolas peeked out and her nipples stood hard.

Riko gently pulled my head forward and buried my face in her cleavage. Warm, soft flesh enveloped my cheeks. A sweet, heavy scent mingled with the steam, making it hard to breathe.

"Mm… How is it? Soft?"

Riko's voice was sweet. I could only moan, unable to speak.

(Ah, this is too much… This feeling is incredible. It's so squishy and sinking. The breast flesh squeezes my face and even though it's hard to breathe, the excitement won't stop.)

My cock twitched in the water. I pressed my face deeper into her cleavage, rubbing the soft flesh with my nose. I could hear her heartbeat and her nipple brushed my lips. Without thinking I opened my mouth and sucked. Riko let out a small moan.

"Kyouya, you're cute… You can suck more if you want."

(Suck? Really? I'm getting addicted to these huge nipples.)

I couldn't hold back, taking her nipple into my mouth and rolling it with my tongue. Her nipple was firm and had a sweet taste. Her hand held my head, pressing me deeper into the valley. The pressure made it hard to breathe but only heightened my arousal. My cock stood erect, throbbing in the water.

Riko shifted and reached between my legs. Her fingers wrapped around my cock in the water and began stroking slowly.

"Wow, Kyouya, you're so hard. You got excited, didn't you?"

At her words I pulled my face from her cleavage and gasped.

"Your breasts, Riko… they're so big and soft, it's too much…"

Riko laughed and had me sit on the shallow edge of the tub. She pressed her breasts together with both hands and buried my face in them again. This time she aimed for my cock too. Her cleavage touched my shaft and she began a titjob. Soft breast flesh sandwiched my cock, moving up and down. The lubrication from the water made it slippery and irresistible.

(Woah, the warmth of her breasts feels like it's melting my cock. Buried so deep in the valley, the head rubs against her nipples… I can't take this.)

Riko's movements quickened and I lifted my hips, writhing. I pinched and rubbed her nipples with my fingers. The weight of her G-cups swayed, sending water splashing. Riko seemed aroused too, grinding her pussy against my thigh. Her pussy was hot from the water and I could feel her soft folds spreading under my fingers.

"Kyouya, more… touch my clit."

I reached out, found her pussy, slid my finger into the slick slit, and rubbed her clit. Riko trembled, increasing the pressure on my face. The pleasure from the titjob peaked and I couldn't hold back, ejaculating hard. Thick semen splattered across her cleavage and mixed with the water.

"Ah, Riko… I came…"

Riko gently embraced me and kissed me. Our tongues intertwined, her saliva sweet. Without resting she sat me on the tub's edge and began sucking me. Her mouth enveloped my cock, sucking like a vacuum. Her tongue licked the underside and I grew hard again.

(A blowjob… a real mouth pussy. Warm, with her teeth lightly grazing in a way that sends shivers.)

Her large breasts rested on my knees, swaying. Unable to hold back, I laid her on her back and tried going down on her. The scent of her pussy mixed with the steam, heightening my arousal. I ran my tongue along her slit and sucked her clit. Riko's moans echoed through the mountains.

"Kyouya, you're good… ahh!"

We moved into cowgirl position. Riko straddled me and took my cock inside her. Her slick insides gripped me tightly while her breasts fell onto my chest. I thrust while squeezing and biting her nipples. Riko's hips moved intensely and I came a second time.

We spent the night overlapping bodies in the water again and again. Sliding against each other like a soapy bath, we finished in missionary. I buried my face in her cleavage repeatedly, lost in ecstasy.

As the morning sun rose we left the water and smiled at each other. Riko said "Let's meet again" and we exchanged contact information. The memory of that hidden hot spring still warms my heart. The warmth of her large breasts feels like it changed the virgin I once was. Yet every night I still remember and touch myself.