Married for two years, the frequency of intimacy has decreased compared to our newlywed days,
and with my husband's busy schedule, we are on the verge of a sexless marriage.
To alleviate my loneliness and unfulfilled desires,
I started going to the local gym's pool with my fellow housewives.
I'm not exactly slim, but my tight swimsuit emphasizes my E-cup breasts.
However, during the daytime, there are only elderly ladies around, so no one really notices.
At first, I was embarrassed, but
after a month, I got completely used to it.
It was around that time that something unusual happened.
Maybe I just hadn't noticed before, but
a male instructor around my age started touching me excessively.
Of course, it's necessary for teaching, but
it felt like he was choosing to touch my buttocks and thighs.
Moreover, it escalated day by day, and his touches became almost like those of a molester.
Before I knew it, I started to feel aroused.
I began to look forward to being touched and feeling aroused.
However, it led to something I hadn't anticipated.
During a lesson in the water, I couldn't wait until I got home,
so I relieved my heated body in the empty shower room.
Of course, I imagined the instructor as my partner.
In my excitement, I lost track of time and climaxed three times.
After changing into my clothes with my heavy body, I left the locker room,
only to find the instructor waiting for me.
Feeling awkward, I tried to pass by quickly, but
he invited me for a private lesson.
"It's free for a trial..."
With a refreshing smile, he asked, making it hard to refuse,
and my body was anticipating it.
When I wrote my name on the application form, I felt something overflowing inside me,
and I almost trembled.
Finally, on the day of the lesson, the only thing protecting my body was a thin swimsuit.
When the lesson started at the edge of the pool, there was no usual
'guidance.' He was completely serious.
I felt incredibly embarrassed.
As time passed, I let my guard down more than usual.
Suddenly, the 'guidance' began.
Moreover, he boldly grabbed my buttocks.
While I was confused, he continued the lesson with a serious face,
all the while massaging my buttocks.
A little distance away, the elderly ladies were swimming.
I tried to maintain my composure, but I was desperately trying to brush his hands away.
Then came the terrifying words.
"You seemed to enjoy yourself quite a bit in the shower room the other day, didn't you?"
My strength left my body,
and I could only offer minimal resistance by placing my hands on his.
From that point on, the parts of my body submerged in water were under his control.
Pretending to give a lesson, he continued to caress my breasts and buttocks.
After about ten minutes, all I could think about was the pleasure.
The important parts that he never touched were aching unbearably.
My rationality was on the verge of collapsing under his 'guidance.'
I was so aroused that I couldn't see anything around me,
but at some point, the other people had left.
"The pool is reserved for the afternoon, so you can relax.
No one will see us from here on."
Before he finished speaking, he slid his fingers over my sensitive bud,
rubbing it through my swimsuit.
"Ahh~ Nooo~"
With the unexpected move, I almost climaxed, and my body collapsed.
Startled by the loud voice I let out, I covered my mouth.
But he moved behind me, pressing his groin against my buttocks,
and slid his fingers into my now slippery private parts inside my swimsuit,
stirring them vigorously.
My body convulsed, and I climaxed without being able to make a sound.
"You're so naughty. You've been holding back a lot. Your breasts are big, and you seem like a pervert."
His words were harsh, but I was still catching my breath,
too embarrassed by my climax to retort.
Then he pulled my swimsuit aside and entered me all at once.
I panicked and said,
"Wait, no. Stop. Please, I'll do anything."
Thanks to that, I regained a bit of rationality.
He slowly pistoned while saying,
"Anything, huh? What should I do?
If you answer all my questions, I'll stop."
"Okay, just stop quickly."
"Answer properly first. When was the last time you had sex?"
While being gently rocked, I endured the pleasure.
If I let my guard down, I would lose my rationality again.
"Two months ago. I answered, so stop."
"That's just the first question. Do you usually do it raw?"
"N-no... ahh"
Grabbing the poolside, I was penetrated deeply, letting out a voice,
covering my mouth with my hand while somehow managing to answer.
"So it's been a while since you did it raw? How long? Does it feel good?"
"I don't know... ahh"
My thoughts were scattered by the slow back-and-forth motion.
Then he stopped moving deeply and knocked on my cervix.
He was clearly bigger and more robust than my husband. I felt like melting from deep inside.
"No, not there, nooo."
"Then what's the answer?"
I was desperate. By this point, I was already under his control.
"Eight months ago, on my birthday."
He returned to slow strokes and said,
"I see. How many times have you had sex with someone other than your husband?"
The varied pace of his thrusts made it impossible to suppress my urge to climax.
My mind was filled with lewd thoughts. I was at my limit.
"... I can't take it anymore. I'm going to cum. Ahhh."
"I'm going to cum too."
He pulsed strongly inside me, releasing his hot fluid.
But he didn't stop there. He was still energetic.
He then took me to the shower room, stripped me naked, and made me give him a breast massage.
He was clearly more impressive than my husband, and the smell and amount of his fluid were overwhelming,
rubbing it all over me.
After soiling my entire body with his member, he entered me in the missionary position.
I lost count of how many times I climaxed there.
I was overwhelmed by the pleasure, unable to do anything.
I was moving my hips on my own, far from being raped.
Before my umpteenth climax, he thrust even more vigorously and said,
"Hah, hah, then the last question. Would you rather I stop here,
or do you want me to cum inside? Beg me."
I couldn't think anymore. All I could feel was my private parts.
But if he came inside me here instead of in the water...
But I was about to go crazy.
"Ahh, don't stop. I'm about to cum.
Please, cum inside me."
He released so much semen inside me that I couldn't contain it,
and I realized I wouldn't be able to have sex with my husband anymore.
