While Taking Care of My Shut-In Little Sister, I Somehow Ended Up Ejaculating Inside a Beautiful Girl - Chapter 4: Catching a Wet, Naked Girl Somehow Led to a Debate About Whether I Got Hard or Not (Part 2)

Chapter 4: Catching a Wet, Naked Girl Somehow Led to a Debate About Whether I Got Hard or Not (Part 2)

“Shouldn’t you wash those underwear, just to be safe?”

“Usotsuki-chan seemed to have washed them already.”

“You don’t know if she washed them properly, though. They were still damp, remember?”

“Well, she did her best, considering her condition.”

“Ugh, you’re too soft on her.”

“I’ll toss them in the washing machine later, alright?”

“That’s the way to go.”

“By the way, Ren-chan…”

“Y-Yeah?”

The atmosphere shifted abruptly. Yuu’s expression and tone carried a sudden pressure as she spoke.

“You said before that you were… im…”

For some reason, her words trailed off into a mumble, barely audible.

“Huh? What?”

“I mean, Ren-chan, you… um…”

Yuu was hesitant, clearly wanting to confirm something but too embarrassed to spit it out. Her face turned bright red as she stammered. Then, out of nowhere—

“Ren-chan!”

“Whoa, w-what?!”

She widened her eyes and raised her voice, only to shrink back in embarrassment again. Yuu was acting weird—kinda scary, even.

Fidgeting, fidgeting, building up to something big, she finally blurted out—

“When you saw Tsuki-chan naked and held her, you… you got… you got—!”

“‘Got’…?”

“You got hard!”

“Hold up.”

Yuu dropped a bombshell.

Me, getting hard from seeing Usotsuki-chan naked and holding her? That makes me sound like some pervert.

…Well, to be fair, parts of that are true. Just a tiny bit.

“I didn’t see her, didn’t hold her, and definitely didn’t get hard.”

“Liar! You totally got hard!!”

“Come on, you backed me up back then, saying I didn’t get hard…”

“But you did get hard…!!”

That part seemed super important to Yuu, as she kept repeating “you got hard.”

Please, stop. It’s embarrassing.

Also, I hope the neighbors didn’t hear—especially Yuu’s parents. That’d be a disaster.

“You said before that you were… im… you know… impotent… didn’t you?”

“What?”

And here we veered into completely unexpected territory.

Me? Im… im… impotent?

No way—wait, where did she even get that idea? I might’ve let it slip once, just a casual complaint, a fleeting moment of weakness.

…She remembered that!?

So, what, she’s saying, “I thought you were impotent this whole time and was being considerate”?

Is there a worse confession than this!?

“Answer me, Ren-chan! You aren’t impotent!? You saw Tsuki-chan naked and got… you aren’t impotent!? What’s going on!?”

“You’re the one who’s going on, you idiot!”

Stop saying “impotent” over and over.

“Look, I thought I was… you know, maybe a bit ED-ish myself, okay? But it turned out different than I expected, and I’m kinda confused too…”

“So you can get hard!? You’re not impotent…!?”

“Yeah… I guess… yeah.”

Please don’t grill me like this. Stop staring into my eyes (and occasionally glancing at my crotch) while chanting “impotent.”

“You’re not imp—ughhh!”

Realizing how embarrassing it was, Yuu—

“Ughhhhhhh!!!”

—What?

I couldn’t tell what emotion she was suppressing, but she covered her face with both hands, trembling all over. When she finally lowered them, her bright red face stared at me.

Then, as if lunging, she grabbed my shoulders with both hands and pushed me down onto the bed.

The world slowed down, like I was watching myself being pinned to the bed in slow motion. But my mind was anything but calm.

“Y-Yuu…?”

“Ughhh… ughhhhh!!”

Thud. She pushed me onto the bed.

Her face, unbecomingly red for such a beauty, was expressionless—no, for Yuu, it was a look of sheer determination—as she glared at me, breathing heavily.

Then, she collapsed onto me, pressing her entire body against mine.

“You got hard when Tsuki-chan did the same thing to you.”

“Hey, Yuu, calm down.”

The same thing? No, it’s pretty different.

Back then, Usotsuki-chan was fresh from the bath, naked, smelling of shampoo and nice stuff.

The sight of her skin, her slender body burned into my vision—it was sudden, and I was rattled.

“…So why?”

Yuu looked at me with teary eyes.

Her anger was cooling, but the flush on her cheeks betrayed her agitation.

“Why is it that when I do the same thing, you don’t—”

Pressing her chest against mine, Yuu spoke at point-blank range, her breath grazing my face.

Her lower abdomen sent a soft sensation to my groin.

“Hold on, Yuu.”

It’s not the same.

Absolutely not, I thought.

She didn’t smell like post-bath freshness—she’d been out all day, hadn’t showered, yet she smelled good.

A faint trace of shampoo or perfume.

Mixed in was Yuu’s scent—that was it.

“Even when I do the same thing, you don’t react at all—”

It’s not that I’m not reacting.

That moment and this one are completely different.

“Calm down, Yuu. Back then, I was caught off guard—”

Yeah, I was rattled. No doubt about it. Seeing Usotsuki-chan’s naked body up close, feeling her directly. In my shock and carelessness, I fumbled my control over my urges.

“And now?”

“Huh?”

What Yuu was fixated on was the physical reaction I’d shown afterward.

“Are you… calm… now?”

“Now—”

It was obvious what she meant.

My heart was pounding. I tried to keep a straight face, but the intense rhythm of my chest felt like we were sharing heartbeats, a strange sense of unity.

I could feel her pulse, and she could probably feel mine.

Our hearts were racing, as if thrilled by this contact.

“—!”

I felt it.

Blood rushing to my groin.

Yuu’s warmth seeping into me.

Yuu’s scent.

Yuu’s touch.

Yuu’s teary eyes, urging me to see her.

“Yuu, get off—”

This was bad. Making that call, I placed my hands on her shoulders.

“—Ahn! ♥”

Too late.

An overwhelming, irrational force I couldn’t control.

Instinct for survival.

—Desire.

A pathetic, merciless sensation—heat, hardness—brushed against the inside of Yuu’s thigh as I tried to push her off.

“T-This…!? ♥”

“………………………Ugh.”

As Yuu’s eyes sparkled, I covered my face with my hand.

I messed up.

Too late now, but why did I let things get this far with Yuu? Why did I go along with it?

Regret mixed with an undeniable surge of lust welling up inside me.

“Phew, so you can—Eek!?”

Yuu’s position, leaning over me, flipped in an instant.

Grabbing her shoulders, I pulled her left one and pushed her right, spinning her body to switch places.

“Ren… chan…?”

Yuu looked shocked by my sudden move.

Now lying on her back on the bed, she stared at me, eyes wide, stunned.

For a brief moment, fear flashed across her face, but it vanished quickly, replaced by something else.

I’m hovering over Yuu on all fours.

Yet, even in this position, she doesn’t resist.

In a situation where she could easily be taken advantage of—no, let’s be real, it’s probably headed that way if left unchecked.

“Yuu.”

Feeling lightheaded, like I’m floating, I called her name.

My hand gently traced her jaw, under her ear, along her neck.

“Nn… ♥”

She shivered slightly, as if tickled, but from then on, Yuu let me do as I pleased.

“Ren-chan… ♥”

Her cheeks flushed bright red.

As I caressed her neck, I felt her warmth, her quickening pulse, through my fingertips.

“…We’re just a fake couple.”

“Yeah ♥”

Yuu smiled and nodded.

Does she really get it?

“So, there’s no way ‘something’ or some ‘mistake’ could happen between us.”

“Right ♥”

There has to be “nothing real” between us.

We act like we’re in a pure relationship, but in reality, there must be nothing.

Because it’s all a “pretend.” A “fake.”

We’re only playing boyfriend and girlfriend out of necessity, bound by a mutual agreement for convenience, not some romantic connection.

—That’s how it’s supposed to be.

Yet, I couldn’t help feeling my body heat up—blood still rushing to my groin, stirring anxiety, tension, and overwhelming desire.

“Yuu—!”

Hovering over her on all fours, I slid one knee between her legs.

“Nn! ♥”

Her body trembled slightly, her eyes, narrowed in a smile, gleaming dreamily in the shadow I cast, blocking the room’s light.

Her inner shorts skirt. The thin black fabric, with a noticeably darker, damp patch at the crotch.

My knee, bare in just half-pants, felt the warm, slightly sticky liquid seeping out.

I’m not sure if she’s aware her crotch is wet. She’d probably be mortified if she noticed.

“It’ll probably hurt a lot, but you can move however you want, Ren-chan, I don’t mind ♥”

Yuu prefaced what was likely to come, speaking now while she still could.

Her rationality was at its limit. One step further, and she’d probably lose all restraint.

Like a small crack in a dam’s wall, leading to a massive collapse and flood.

Like something long suppressed was about to burst free.

“Ren-chan… ♥ Ren-chan…! ♥♥”

Breathing heavily, she reached out to me.

Her hands grabbed the back of my neck, pulling me closer—tug, tug.

I barely stopped myself from burying my face in her chest, but then she wrapped her legs around my waist.

Her expression, her voice, her warmth, her breathing.

Every sign of her arousal pulled me in, making my own breathing grow ragged.

My groin ached, desperate for release, urging me to let loose my desires.

Half-pants were a blessing—if I’d been in jeans, the pain might’ve driven me to whip it out already.

Or maybe I should just take the half-pants off? It’s not like they’re that comfortable right now…

Look, Yuu’s still giving me that dreamy smile, calling out to me softly.

Go for it. Just do it.

My instincts screamed.

My hips burned with an itching heat.

Take the woman in front of you, make her yours.

I was undeniably aroused.

“Come on ♥”

Her sweet, gentle whisper in my ear was the trigger.

Snap.

Pop, pop, pop.

I swore I heard the threads of my rationality, woven together like fibers, snapping all at once.

I felt myself breaking.

No, I had broken.

In my vision, my arms moved on their own, unbuttoning every button on Yuu’s beige cardigan.

Beneath it appeared a thin, long-sleeved white shirt, sheer enough to faintly show her skin.

At the peaks of her chest, two slightly darker points stood out.

No bra, it seems.

“… ♥”

Yuu, noticing me staring, swallowed hard with a nervous gulp. But her expression, tense yet delighted, spurred me on, like a butterfly drawn to nectar, moving in a daze.

In a dreamlike state, I reached for her waist.

“—”

“Ah! ♥”

My hands touched the hem of her shirt and skirt, brushing her bare skin, and Yuu shivered again.

She lifted her hips and legs slightly, as if cooperating, waiting to be undressed.

If I lifted my left hand, her shirt would come up.

If I pulled with my right, her skirt would come off.

*

That’s when it happened.

Bzzzt.

Bzzzt.

Bzzzt.

The sound of my phone vibrating.

For a moment, I thought it was a call, but listening closer, it was a notification for a message or something.

“—!!”

I snapped back to reality.

I realized where my hands were, what I was about to do.

Of course, I hadn’t prepared any protection—no condoms.

Neither had Yuu.

If we’d gone all the way in this state—what a terrifying thought.

“…Why am I doing this—?”

The rectangular buzzing phone by my pillow brought me back to my senses.

Taking a step back, I assessed the situation.

On the bed, a guy and a girl were tangled up, on the verge of going too far.

My raging erection had pitched a one-pole tent in my pants, camping just centimeters above her lower abdomen.

That was close.

If the camper had left the tent, there’d have been no stopping it.

“…Oh.”

Yuu let out a faint, hoarse sigh, barely audible, as I slightly pulled back.

“…”

Her eyes widened, her expression turning sad, almost pained—as if she wasn’t ready to give up, she grabbed my hands tightly.

My hands stayed where they were, poised to undress her.

“Yuu.”

Still sporting a tent in my pants, I looked straight at her.

“What…? ♥”

Yuu, a bit shaken but still with that dreamy expression, responded.

“Sorry, I just…”

“Huh? Oh…”

Seizing the moment when Yuu’s grip loosened in her surprise, I gently freed my hands.

Her legs, wrapped around my waist, unraveled at the same time.

“Yuu, this might sound like a lame excuse, but… you’re really important to me as my childhood friend.”

“…Yeah.”

She nodded solemnly at my words.

“Let’s… you know… let’s value each other.”

“Yeah—wait, what!?”

Yuu’s eyes widened in shock.

Her face screamed, What are you saying? Unbelievable.

She covered her mouth in surprise, then hid her face with both hands, as if to conceal her rising smile and flushed cheeks.

“…No, what I meant was, like, in this situation—we’re just fake lovers right now, so…”

“—Yeah, yeah! ♥♥”

For some reason, Yuu nodded enthusiastically, overcome with emotion, still covering her face.

Looking down at her, I squirmed awkwardly, unlike my usual self, struggling to speak.

“Right now, that’s how it is ♥♥”

“…Huh?”

I reacted late to her words. “Right now”? What’s that mean? The way she latched onto my phrasing—what did I even say?

I couldn’t even remember what I’d just said.

“Wait, what did I say just now…?”

“Hehe ♥ Not telling~ ♥”

Yuu rubbed her thighs together, as if conscious of her crotch.

With a small “Eek! ♥” she started squirming on the bed, and I finally moved off her.

“Phew…”

Sighing, I glanced down and saw the tent in my pants had collapsed.

Now it was calm as a still sea, not twitching in the slightest.

It could’ve lasted longer… Maybe I am a bit ED.

“Nn ♥”

“Yeah.”

I took Yuu’s outstretched hand and helped her sit up.

“Ren-chan ♥”

I let her lean into me, her body soft and clinging.

When did her hair come loose? Her usual braid was gone, and her long, dark brown hair flowed straight, brushing against my arm.

Sitting side by side on the bed, close together.

We didn’t go all the way, but I’m exhausted.

The vibe feels like post-coital afterglow.

With this kind of fatigue, I’ll probably sleep well tonight.

“…I’m really grateful for you, Yuu.”

“Hm~? ♥”

Still leaning against me, she whispered, “What’s that all of a sudden?”

“Lately, I’ve been able to sleep normally at night.”

“Really? ♥”

Yuu gave a short reply.

We stayed like that, leaning into each other.

On the bed, without a word spoken.

But the atmosphere felt oddly comforting, and I couldn’t stop a small smile from creeping onto my face.

“Thanks, Yuu.”

“You’re welcome ♥”

The soothing whisper of her voice lingered in my ears.

I’ll definitely sleep well tonight.

*

“Want me to wash those underwear for you?”

“Huh? Nah, I can do it my—”

“I’ll wash them for you, okay?”

“Uh, o-okay…”

Yuu, exuding some strange pressure, was holding men’s underwear—gray and black checkered.

Thanks to an incident after school (let’s blame Usotsuki-chan for now), my underwear got a bit wet.

Actually, when I changed into casual clothes, I swapped out my underwear too…

I hung my school uniform in the closet, but the underwear I’d been wearing was tossed somewhere near the pair I got back from Usotsuki-chan.

“Alright, I’m taking these~”

Yuu held the underwear up in front of her face.

From behind, I couldn’t see her expression, but her shoulders moved slightly up and down, silently, as she stared upward, looking dazed.

For a bit, she didn’t seem to hear anything I said.

“Yuu?”

“Eep…”

“I was saying you can wear the Crocs home, you know.”

“Oh… yeah…”

Turning around, Yuu nodded shyly for some reason and slipped on the Crocs by the door.

Since she’d climbed in through the second-floor window, she didn’t have her own shoes.

“You can return the Crocs tomorrow. I’ll wash the pot too. See ya, tomorrow.”

“…Yeah… see you tomorrow…”

She responded, but Yuu seemed unsteady, walking out the door in a daze. Is she okay?

“…”

I stood there in the entryway, spacing out even after she left.

“Yuu… whoa!?”

I startled myself by saying her name out loud without realizing.

My whole body was buzzing from the intense physical contact we’d just had.

I felt an erection stronger than ever before.

“No way…”

I thought it had calmed down earlier, but it was back with a vengeance.

Yuu.

My beautiful childhood friend, next-door neighbor, long-time buddy, and fake girlfriend.

…That’s how it’s supposed to be.

“…I probably need to buy some condoms. No, I should carry them with me at all times.”

Just in case. But that “just in case” could come in unexpected ways.

I might not always be able to hold myself back.

I recalled the sensation of Yuu’s touch etched into my body, the feeling when I caught her scent.

The undeniable change in myself.

The overwhelming influence she has on me, felt in my very skin.

As if celebrating the lesson learned from this, my little friend twitched with joy.

My body was brutally honest, it seemed.

*

[20:46]

Usotsuki-chan: Yo, Ren-kun, you free? Wanna hop on a call?

[20:46]

Usotsuki-chan: Let’s talk~

[20:47]

Usotsuki-chan: You busy?

[21:09]

Ren: Sorry, kinda busy right now. [Read]

[21:10]

Usotsuki-chan: [Call in progress…]

[21:10]

[Call ended (00:03)]

[21:10]

Usotsuki-chan: Yo, you hung up?

[21:11]

Ren: I said I’m busy. [Read]

[21:11]

Usotsuki-chan: You cut me off, like, instantly.

[21:11]

Usotsuki-chan: Don’t wanna talk to me that bad, huh?

[21:12]

Ren: It’s not like that. [Read]

Ren: What’s up, anyway? [Read]

[21:12]

Usotsuki-chan: Just wanted to hear your voice~ ♡

[21:12]

Usotsuki-chan: [Call in progress…]

[21:12]

[Call ended (00:01)]

[21:12]

Usotsuki-chan: Lmao, that was FAST

[21:13]

Ren: If you’ve got nothing to say, quit it. [Read]

[21:13]

Usotsuki-chan: What, you in the middle of something?

[21:13]

Ren: Like I said. [Read]

[21:13]

Usotsuki-chan: What’re you doing?

[21:14]

Ren: It’s a secret. [Read]

[21:14]

Usotsuki-chan: A secret? Lol what’s that about www

[21:14]

Ren: So, what’s the deal? [Read]

[21:14]

Usotsuki-chan: When’re you going to bed tonight?

[21:14]

Ren: Gonna shower soon and crash right after. [Read]

[21:14]

Usotsuki-chan: Oh, cool.

[21:15]

Ren: Didn’t you message me for a reason? [Read]

[21:17]

Usotsuki-chan: Just wanted to say goodnight.

[21:18]

Ren: Alright, alright, goodnight. [Read]

[21:18]

Usotsuki-chan: Not so cold! Say it nicer.

[21:21]

Ren: Goodnight. [Read]

[21:21]

Usotsuki-chan: Goodnight~ ♡

[21:22]

Ren: Can you not put hearts in your messages? [Read]

[21:22]

Usotsuki-chan: That’s my freedom, isn’t it? I’m just being cute, duh.

[21:22]

Ren: Fair enough. My bad, sorry. [Read]

[21:22]

Usotsuki-chan: It’s fine~ ♡ I don’t mind a little possessiveness ♡

[21:23]

Ren: Gotta go, shower time. Catch you later. [Read]

[21:23]

Usotsuki-chan: Kk.

[22:01]

Usotsuki-chan: Done with your bath?

[22:02]

Usotsuki-chan: Now that I think about it, you’re going to bed crazy early tonight.

[22:02]

Usotsuki-chan: Yo, you awake?

[22:02]

Usotsuki-chan: Heyy.

[22:03]

Usotsuki-chan: Yo.

[22:05]

Usotsuki-chan: Did you fall asleep?

[22:06]

Usotsuki-chan: Heyy.

[22:34]

Usotsuki-chan: You’re really not reading these…

[22:34]

Usotsuki-chan: Night~