High school boys are foolish creatures.
According to my statistical survey (n=1), roughly 80% of "normal" high school boys have become masturbation monkeys driven by their lust for sex. They need to ejaculate at least once a day, or their crotches ache so badly they can't function properly.
Even more foolishly, when their sexual desire becomes overwhelming, they often find themselves leering at the opposite-sex family members they live with.
Yes, Mom. Mom is my biggest problem. The fact that the very person who inadvertently stokes my sexual desire to a point where I start wondering if something's wrong with me is right under my nose is what's bothering me right now.
My stepmother, Minori-san. She's 32 years old, with a figure that practically defines the term "voluptuous." I secretly peeked at her bra once and saw she wears I-cup. That size alone would be more than enough to drive any high school guy wild. Her waist is cinched, and her hips are massive. How my unremarkable father managed to remarry such an erotic woman is utterly beyond me.
Feeling that it would be dishonest to only discuss her physique, I should also mention her face, which is equally overflowing with seductive charm. Her large, double-folded eyes are so striking that when you meet her gaze, it feels like you might be sucked into the depths of her jet-black pupils. Her straight, refined nose and full, slightly thick lips further enhance her adult feminine allure.
Living under the same roof with a woman whose face and body seem to embody the ideal of every perverted high school boy in Japan, spending most of our time alone together... It would be stranger if I didn't go crazy.
Minori-san, who favors clothing that accentuates her figure in all the wrong ways, unwittingly fuels my daily masturbation sessions with her alluring presence.
But it seems I wasn't the only one with pent-up sexual desires.
After a certain incident, the relationship between my stepmother and me takes an unexpected turn.
*****
Late one night, I wake up to a faint noise.
The sound is coming from the couple's bedroom next to my room.
I wonder if Minori-san is still awake and doing something, so I quietly strain my ears.
As usual, my father was away on a business trip, leaving only Minori-san and me at home.
The clock by my bed showed exactly 2
*****
AM.
*****
"...Ngh...nn...kch..."
It was a sound like a hiccup, or perhaps a stifled sob.
Curiosity piqued, I quietly slipped out of my room and tiptoed toward the bedroom.
Pressing my ear against the wooden door, I could hear Minori-san's voice more clearly.
"Ngh...haah...nngh..."
Wait, is this...?
Those husky, breathy moans were unmistakably the sounds of a woman's pleasure.
Since Minori-san was the only one in the bedroom, it could only mean she was doing "that" alone. In other words, masturbating.
"Ugh... Uwah... Ahh..."
The desperate voice gradually grew louder.
The moment I imagined my stepmother, her glossy, alluring lips parting to reveal her perfect white teeth as she panted, my cock instantly hardened to its limit, pushing so hard against my sweats that it nearly burst through.
(Minori-san... Masturbating...)
Honestly, I desperately wanted to see it. I'd already seen too much.
I had to witness this lewd sight of my beautiful stepmother, who had never before shown even the slightest hint of such indecency, with my own eyes. But opening the door now would be too risky. My relationship with my stepmother was good, and I wanted to avoid any cracks forming in our current harmony.
But...
"Just a little... Just a peek wouldn't hurt..."
After all, I was still a healthy high school boy.
I want to see what I want to see, and I'm not experienced enough to suppress the urge when hearing such lewd sounds so close at hand.
Gently, I place my hand on the doorknob. If it's locked from the inside, I won't be able to see anything. In that case, I'll accept it and give up, using Minori-san's lewd moans as my masturbation material instead.
(But I want to see... I really want to see...)
Praying desperately in my heart, as if to God, I turn the knob.
The door opens smoothly.
First, I create just a millimeter of gap to confirm the lock isn't engaged.
The hallway is dark, completely lit, and the bedroom is equally pitch-black, so the difference in brightness between the two is negligible. I think the risk of Minori-san noticing is low, even if the door opens slightly.
"Ugh... Ah... Aah... Nyaah..."
Minori-san's voice now sounded right beside me.
When I opened the door, I saw a bed ahead, and a dark silhouette writhing on top of it.
"Eep! Eeeeep!"
As my eyes gradually adjusted to the darkness, faint outlines began to emerge from the silhouette.
I could see Minori-san, completely naked on the bed, her legs spread wide in an M shape, her hips undulating as she panted.
Two fingers of her right hand were buried in her intimate area, stirring rhythmically with wet, squelching sounds. The obscene symphony of slick noises told me she was drenched from masturbating.
The scene was unbearably lewd. A sight too depraved for a virgin high school boy to witness—his stepmother's wanton debauchery.
I felt my testicles contract sharply.
"..."
My cock was about to explode even though I hadn't even touched it.
If I rubbed it even slightly now, I'd instantly come with the most intense pleasure.
I want to jerk off... I want to masturbate...
I couldn't hold back anymore.
"Aah♡♡ No♡♡ It feels so good♡♡ I'm gonna come♡♡ I'm sorry... Ah♡ Ah♡ Ah♡"
Minori-san apologized to someone while speeding up her finger movements.
Like me, her stepmother seemed to be reaching her limit.
I yanked down my sweatshirt and shorts in one motion, not thinking about the consequences, and started stroking my fully erect cock.
Minori-san was so absorbed in her masturbation that she didn't even notice my presence.
"Aah♡♡ Oh... my pussy♡♡ I'm gonna come♡♡ N-no♡♡"
With a particularly shrill cry, my stepmother violently thrust her hips upward.
My right hand wouldn't stop moving, and I roughly rubbed my hypersensitive mucous membranes, the friction almost unbearable.
Oh, fuck! I'm gonna come! Minori-san! Watching you masturbate... I'm gonna... I'm gonna come!
"Ah♡♡♡"
"...Ugh!"
Minori's lifted hips spasmed as she came.
At the same time, I groaned through gritted teeth, desperately trying to hold back, and released a torrent of pleasure, spurting thick white fluid.
Dokun♡ Dokun♡ My throbbing penis pulsed, spilling thick white fluid that splattered against the bedroom door.
The illicit thrill of feeling like I was actually spilling on Minori herself only heightened my arousal.
Cleaning up this mess later and erasing the evidence was a trivial concern. All that mattered now was the burning desire to jerk off while watching my dream stepmother's lewd masturbation.
In a state of extreme mental impairment, I was intoxicated by the bliss of having just experienced the best masturbation of my life, and I let out a deep sigh.
My gaze remained fixed on my stepmother, her body trembling on the bed.
Her lustrous limbs lay sprawled across the sheets, her breathing ragged and labored.
Then, without warning, she murmured:
"Ah... Yosuke-san..."
Her voice was so sudden that I startled, accidentally banging my hand against the door.
"Kyaa! Wh-what?!"
The sound alerted Minori-san to my presence, eliciting a short, startled shriek.
My mind went blank. Stammering an apology in a squeaky voice, I fled to my room, clutching my crotch. But by doing so, I only confirmed the fact that I had been spying on her.
"Damn it... Oh god... I'm completely finished..."
Forgetting even to wipe my crotch with a tissue, I curled up on the futon, trembling with fear, and spent the night barely sleeping.
*****
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