Chapter 8

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Chapter 8: Little Sister (No Erotica)  

Author’s Note: While I can’t speak for all universities, generally classes are held even on holidays.  

But for some reason, yesterday was an exception—I only found out after arriving at school.  

So here’s an angry post.  

Also, despite the lack of explicit scenes, this one ended up longer than usual.  

************************************************

Today, as usual, Rin was embracing Kaede in the infirmary.  

Rin’s preferred position was penetrative sex from behind, but today, they lay naked on the bed in the missionary position.  

Pinning Kaede down, Rin interlaced their fingers—the so-called “lovers’ hold.”  

Kaede’s heart raced as Rin’s flawless, porcelain skin and breathtaking beauty filled her vision at close range.  

This scene was a far cry from their usual master-slave dynamic—it felt almost like they were lovers.  

Truthfully, Rin’s instincts screamed to flip Kaede over, spank her, and take her like an animal. But today, that wasn’t an option.  

Still, seeing Kaede’s teary-eyed, maidenly expression made Rin think a change of pace wasn’t so bad.  

Even in this unusual scenario, Kaede’s pussy was already dripping wet, no foreplay needed.  

Suppressing her sadistic grin, Rin pressed her cock against Kaede’s entrance.  

Normally, Kaede would arch her hips and beg for penetration, but today, she bit her lip and hesitated.  

“Um, Master…”  

“What is it?”  

“Well, it’s just…”  

“……”  

Blushing, Kaede glanced sideways uncomfortably.  

Rin sighed and followed her gaze.  

“……What?”  

“……Nothing.”  

There, sitting sullenly on a folding chair, was a girl—Rin’s little sister, Shirojo Saki.  

—  

The sisters shared some resemblance, but unless they stood side by side, no one would guess they were related.  

The first noticeable difference was their hair.  

Saki’s twin-tailed silver locks, inherited from their mother, were smooth as silk, standing out starkly among Japan’s predominantly black-haired population. Rin’s raven-black hair, from their father, was the polar opposite.  

The biggest contrast, though, was their builds.  

At nearly 170 cm, Rin towered over Saki, who barely reached 150 cm. Their one-year age gap seemed impossible.  

Saki’s petite frame lacked Rin’s curves—her bust and hips were modest, her limbs delicate. Yet her doll-like beauty made up for it.  

Their faces were similar, but Saki’s large, almond-shaped eyes softened her sharp features. Her ever-changing expressions gave her an approachable charm, and her snow-white complexion made her look like a fairy.  

Already, Saki had become her class’s mascot. Her friendly personality had earned her a swarm of friends and social media followers within a month of starting high school—far surpassing Rin’s popularity.  

But Saki’s attitude toward Rin was icy. She ignored her at meals and school, a far cry from their childhood closeness.  

The rift began in middle school, after an incident Rin still remembered vividly.  

—  

[Flashback.]

That day, a storm had drenched Rin on her way home. Her favorite umbrella had broken within seconds.  

Assuming she was alone—since Saki’s tennis practice usually ran late—Rin stripped in the changing room.  

But the door creaked open.  

Saki stood frozen, her eyes wide with horror—locked onto Rin’s groin.  

There, despite the cold, hung an unmistakably male appendage.  

Rin scrambled to cover herself, but it was too late.  

Saki turned away silently and left.  

—  

[Back to the Present.]

Saki had known Rin was a futanari—they’d bathed together as kids. But puberty had transformed Rin’s body into something monstrous in Saki’s eyes.  

Since then, Saki had avoided Rin entirely.  

—

The answer lay in last night’s events.  

—

“Big… sister…”  

Saki’s voice was uncharacteristically meek. Her usual glare was replaced with lustful anticipation as she sat in the hallway, fingers buried between her legs.  

The wet sounds of her masturbation echoed in the silent corridor.  

Rin was paralyzed—until Kaede’s moans from the infirmary snapped Saki back to reality.  

“…!”  

“Wait!”  

Rin grabbed Saki’s shoulder.  

Saki’s gaze turned glacial.  

“…What?”  

“I…”  

Rin faltered. What could she say?  

Saki broke the silence.  

“Tonight. Come to my room.”  

Then she fled.  

—

At 11 PM, Rin stood outside Saki’s door, heart pounding.  

The room had changed since Rin last saw it—gone were the stuffed animals, replaced by band posters and a sleek sound system.  

The air was thick with sweet perfume.  

“…You’re disgusting,” Saki muttered, noticing Rin’s half-hard state.  

Rin sat stiffly on a dog-shaped cushion while Saki lounged on her bed.  

“About earlier…” Saki began.  

“…Yes?”  

“Are you… dating Yuuki-sensei?”  

Rin froze.  

(Saki doesn’t know I raped Kaede. She only saw us having sex.)  

It wasn’t an unreasonable assumption. Even if their relationship was illicit, it could be seen as consensual.  

But how to define their bond?  

Master and slave? That wasn’t something Rin could admit.  

Yet she couldn’t deny her feelings—possessiveness, obsession. If it were just sex, she wouldn’t forbid Kaede from touching her husband.  

So Rin answered.

“…Yes. We’re lovers. I know it’s wrong, but I love her. Please… keep this secret.”  

Saki seemed to accept this.  

Then—  

“Then show me tomorrow. Let me watch you have sex with her in the infirmary.”  

“…What?”  

Rin’s mind blanked.  

Saki flushed, scrambling to justify herself.  

“I—I need to check if your relationship is healthy! As your sister!”  

“That makes no sense—”  

“Shut up! Just be there! Or I’ll tell everyone!”  

With that, Rin was shoved out.  

—  

[Back to the Present.]

Now, under Saki’s scrutiny, Rin and Kaede played their roles.  

Kaede, annoyed at the intrusion, glared back.  

Saki, despite her tough act, was clearly flustered—her cheeks pink, her eyes darting to Rin’s cock.  

“…Hurry up,” Saki muttered.  

Rin steeled herself.  

“Kaede.”  

She squeezed their interlaced hands tighter. Kaede’s wedding ring was long gone.  

“Mas… Rin. Please…”  

Hearing Kaede stumble over her name sent a pang through Rin’s chest.  

“I’m going in…”  

As Rin slowly lowered her hips, Saki gulped audibly.  

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Author’s Note: I usually aim for 4,000–5,000 characters, but this hit nearly 7,000. My apologies. 

Also, I borrowed a trendy summary-style title for this chapter since I liked how it “resonated” (pun intended). Should I change it? For now, I’m keeping it—I don’t have better ideas.