Chapter 9
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Chapter 9: Big Sister (Voyeurism Masturbation ※ Saki’s Perspective)
Author’s Note: I apologize for the delayed update.
I was busy with my part-time job. I swear I wasn’t slacking off playing puzzle games.
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Shirojo Saki harbored complicated feelings toward her older sister.
Summarizing them in a single word would be impossible.
Affection, respect, admiration, envy, jealousy, disgust, avoidance—a murky, tangled mess of love and hate. Like sludge pooling in her heart, it was something even Saki couldn’t fully articulate.
—
The Beginning Was Pure Adoration.
A deep, innocent love for her kind, beautiful, and cool big sister. Rin had always doted on Saki, taken care of her, and Saki had adored her in return.
But when did that start to change?
As she grew older, Saki developed a complex about her sister.
Rin was too perfect. Even in elementary school, she excelled in everything—academics, sports, art. Teachers marveled at her intellect, she broke school records in track, and her paintings won top prizes effortlessly.
It was only natural for Saki to feel resentment toward such an untouchable older sister. But back then, it was still just admiration.
The jealousy festered into something darker in middle school.
By then, Rin was already legendary. Her genius had only grown more pronounced, and even new students knew her name.
As a result, no matter what Saki did, she was seen through the lens of being “Rin’s little sister.” Even her achievements were dismissed as expected, and her shortcomings were met with disappointment.
Worse, Saki became a target of bullying.
Some of it stemmed from her foreign-looking beauty, but much of it was because of Rin.
Rin’s popularity had spawned a fan club among the first-year girls, and Saki—as Rin’s sister—became the focus of their jealousy.
The bullying wasn’t extreme—ostracism, whispers, stolen belongings—but it hurt.
It ended quickly when Rin found out and intervened behind the scenes. Within a week, the bullies were apologizing. Saki forgave them, and thanks to her natural sociability, she soon rose to the top of her class’s social hierarchy.
But the damage was done.
Saki began distancing herself from Rin, aware that her actions were driven by ugly jealousy and fear of being bullied again.
She felt guilty seeing Rin’s lonely smiles, but she could no longer adore her sister purely.
Yet Rin remained someone Saki respected.
—
The Final Breaking Point.
It happened on a stormy day in Saki’s second year of middle school.
Torrential rain had canceled all after-school activities, including Saki’s tennis practice. Exhausted and drenched, she hurried home, dreading the prospect of running into Rin.
But when she stepped into the changing room, she froze.
There stood Rin—completely naked.
Her flawless, porcelain skin, her curves that defied belief for a middle schooler, her long, sculpted limbs—she looked like a work of art.
But Saki’s eyes locked onto one thing.
Between Rin’s thighs hung a monstrously large penis.
Saki had known Rin was a Futanari—they’d bathed together as kids. But puberty had transformed it into something terrifying.
Thick, veiny, and crowned by swollen glans, it was bigger than anything Saki had seen in the adult videos she’d secretly watched.
Instinctive revulsion twisted her stomach.
She slammed the door shut and fled.
—
Aftermath.
Humans instinctively fear the abnormal.
Saki began avoiding Rin entirely, her disgust manifesting in cold indifference.
When they ended up at the same high school—Yasou Academy—Saki was bitter at first. But the school’s prestige, elite tennis team, and liberal environment won her over.
To her relief, the bullying didn’t follow her.
In fact, Saki thrived.
Her beauty earned her mascot status, and her social skills placed her in the “popular group.” She even made peace with her jealousy—while Rin outshone her in talent, Saki had something Rin lacked: charisma.
The black sludge in her heart never fully disappeared, but it no longer consumed her.
The only thing she couldn’t shake was her disgust for Rin’s… cock.
She never wanted to see it again.
Or so she thought.
—
The Incident.
One day, Saki twisted her ankle during practice and went to the infirmary.
What she saw through the slightly ajar door defied belief.
On the bed—where sick students were supposed to rest—two women were entangled.
One was her sister.
The other was Yuuki Kaede, the school nurse.
A married woman.
Kaede’s usual composed demeanor was gone, replaced by a lewd, ecstatic expression as Rin—
No.
Not Rin.
A man.
Because the way Rin moved—the way she pistoned into Kaede—was undeniably masculine.
Saki’s mind reeled.
(Is that… my sister…?)
A wet, rhythmic sound filled the air.
Kaede’s moans were animalistic, raw.
“Ahhh! Y-Yes! Right there! Your big cock—! It’s so deep—!”
Saki’s body reacted before her mind could process it.
Her hand slid under her skirt.
She shouldn’t be turned on by this.
Her sister was fucking another woman.
A married woman.
But her fingers moved on their own, rubbing her clit in frantic circles.
Her panties were soaked.
She bit her lip to stifle a moan.
Rin’s thrusts grew rougher, faster. As Kaede cries louder, more desperate.
Then—
“I’m cumming! Take it all!”
A guttural groan.
The sound of something thick and wet splattering inside.
Saki came.
Hard.
Her legs gave out as she squirted onto the hallway floor.
—
After That Day.
Saki couldn’t forget the pleasure she’d felt.
It became an addiction.
She skipped practice, made excuses, and returned to the infirmary—to watch, to touch herself, to come again and again.
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Author’s Note: Lately, I’ve been obsessed with abura soba. It’s ridiculously delicious, but the portions are so huge I end up clutching my stomach on the way home. I swear I’ll never go back… until I do two days later.
Also, the total rating for this story has surpassed 2000. I didn’t start writing for praise, but I won’t lie—it feels good.
