While Taking Care of My Shut-In Little Sister, I Somehow Ended Up Ejaculating Inside a Beautiful Girl

Chapter 6: While Living My Usual School Life, I Somehow Got Accused of Two-Timing (Part 2)

In the end, Yuu and I headed home as usual after that. Once we got back, we returned the stuff we’d borrowed from each other and went to our respective houses. Now, it’s not even evening yet.

I dropped my stuff, changed, and now I’m standing at the entrance, putting on my shoes.

“Veggies, meat… and we’re out of curry roux…”

I checked my memo on my phone before heading out. It might seem odd to be preparing for a trip to Usotsuki-chan’s place with this kind of behavior, but it’s simple—I’m planning to swing by the supermarket afterward.

Curry’s great because you can make a big batch and have meals for days, which makes things easier for the cook. Plus, I’ve been craving it lately, so the Hoshimiya household dinner is officially curry tonight. Decided just now.

I usually go for medium-spicy, but… maybe a milder one this time. My sister and I both prefer curry in the mild-to-medium range for the best flavor.

Still, I can’t help but feel exasperated with myself. I’m always chasing that ideal homemade taste, so different from instant curry, yet I can never quite nail it.

I miss the flavor of Yuu’s cooking.

It’s unfair to compare myself to her—she’s on another level. I don’t mean to downplay effort, but sometimes talent just shows you there are things you’ll never master, no matter how hard you try. I could stand on my head, and I’d still never match her skills.

Anyway, if I want tasty curry, instant would do for flavor alone, but for nutrition, I want to make a veggie-packed one. My sister always cleans her plate when I do, so it’s easy to balance her diet. As long as I watch the portion size, there’s no issue.

It’s all about doing what I can without relying too much on Yuu. Good job, me.

“That’s it… no, that’s everything for today.”

By the way, I checked with my shut-in sister earlier to see if she needed anything, but she didn’t answer, so I guess she’s good for now. If she needs something, she’s got her trusty ally, Am*zon. That’s what she usually does.

“…Man, Am*zon is a lifesaver. Shoutout to the delivery guy, too—thanks as always…”

Back when my sister first became a shut-in, our parents didn’t let her use online shopping. When she ran out of menstrual pads, I had to go buy them for her.

I’ll never forget that note slipped under the door of her “sealed room,” written on loose-leaf paper.

The stares from other shoppers as I stood in front of the sanitary napkin aisle.

The clerk’s quick glance as they scanned my purchase.

That unique tension—it really wears you down mentally.

So, Amzon is the GOAT. All hail Amzon. I salute you.

“Heading out.”

These days, shopping doesn’t faze me at all.

Feeling like a stay-at-home husband, I stepped outside and locked the door.

And then, I noticed a shadow behind me.

“Ren-chaaan ♥”

“Yuu?”

I turned to see Yuu standing there, dressed in casual clothes.

“What a coincidence ♥”

“Yeah, right.”

A coincidence at my own doorstep? Sure. Still, we both played along, acting happy about the “chance” encounter, and I took a look at her.

She was wearing a white blouse under a dark brown sweater, paired with a beige long skirt.

Her usual braid was undone, her long black hair flowing straight.

The faint scent of shampoo wafted from her, like she’d just stepped out of the shower. She looked like she was dressed for a weekend outing, and I couldn’t help but stare.

On closer inspection, her glossy hair was still slightly damp. She should probably dry it properly… too much of a hassle, maybe?

“Going shopping?”

“Something like that.”

I showed her the shopping list on my phone’s memo app as she tilted her head.

“Curry?”

“…Yeah, thought I’d make curry tonight.”

I nodded, impressed that she instantly guessed the Hoshimiya dinner menu from the ingredients, and started walking down the stone path from my entrance to the street.

“Actually, I’m heading to the store too~”

“Really?”

“The supermarket nearby, right? Mind if I tag along?”

“Sure thing.”

“Yay ♥”

This throws a wrench in my plans. I was about to head to Usotsuki-chan’s place, but now Yuu’s coming along. On paper, I’m just going shopping, so refusing would be weird.

I don’t mind carrying her stuff, but something about Yuu’s vibe feels off. She’s dressed so lightly—barely holding anything, not even a wallet.

Worse, Usotsuki-chan’s house and the supermarket are in slightly different directions.

At the next fork in the road, she’ll notice I’m not heading to the store.

If I can’t keep it a secret—and it’s bound to come out eventually—it’s better to come clean now.

…Wait, it’s not even something I need to hide. My actions are for the sake of both Yuu and Usotsuki-chan, after all.

“Actually, I was planning to stop by Usotsuki-chan’s place before shopping.”

“…Oh?”

Yuu looked a bit surprised as I spilled the truth early into our walk, giving me a sidelong glance.

“Here I thought you were sneaking off to see your side chick.”

“Hey…”

“Haha, kidding, obviously kidding.”

Yuu laughed brightly, her deep, clear black eyes locking onto me as she murmured.

“There’s no way Ren-chan would cheat, or ever could.”

“Obviously.”

I replied matter-of-factly, glancing at her outfit as I asked.

“Wanna come to Usotsuki-chan’s place too?”

“Can I?”

“Of course.”

She made a show of checking my intentions, but I got the sense she’d already decided to tag along. Just a hunch.

“Gotta keep an eye on my boyfriend to make sure he doesn’t cheat~”

“Hey.”

“Hahaha ♥”

Yuu laughed mischievously and grabbed my arm, pressing herself close.

We linked arms like a real couple.

“…Uh.”

“What~? ♥”

“When you get that close…”

The faint, pleasant scent of Yuu was enough to jolt me awake, but feeling her softness and warmth made it impossible to ignore.

“When I get this close, what? You get hard? ♥”

“…”

“Hehe ♥”

When I shot her a sullen look, not bothering to hide my frustration, she flashed the most delighted, goofy grin.

Every now and then, her affectionate gaze flicked to my crotch, which only made me more self-conscious.

Also, her obsession with my… recovering non-impotence—let’s call it my reviving erection—is intense. I get that we’re at that age, but isn’t she a bit too curious?

“Ren-chan.”

“What?”

“Just wanted to say your name~ ♥♥”

“…”

I wonder what Usotsuki-chan will think when she sees us show up at her place like this.

Hoping she doesn’t find us annoying and kick us out, I let Yuu stay glued to my arm as we head to Usotsuki-chan’s house.

“Oh, right.”

I suddenly remembered something important.

“There’s something I wanted to ask you, Yuu.”

“What~? ♥”

“About Nijouin.”

“…What about her?”

The goofy grin she’d been wearing vanished, her face turning completely serious, almost cold.

“Don’t give me that scary look. Sorry for bringing it up now. But since she’s in your class, I was wondering what she’s like normally. I figured it’d help us figure out this whole mess.”

“…If that’s what it’s about—”

As we walked, I listened to everything Yuu knew about Nijouin while thinking over Usotsuki-chan’s rumor situation.

“What’s up with you two?”

Usotsuki-chan opened her front door, looking sleepy. One side of her usual blonde twin-tails was undone.

“And both of you…”

She glanced at us—mostly at our linked arms—and made a complicated face.

Maybe she guessed why we were here, or maybe she just didn’t care, because she continued in a flat tone.

“…Whatever. Come in.”

For the record, she didn’t seem scared of Yuu or anything like that.

““Thanks for having us!””

Yuu and I lined up our shoes and stepped inside.

Her house had a distinct smell, different from mine or Yuu’s.

I noticed an aroma oil diffuser on a shelf in the corner of the living room, different from the one in Yuu’s room. The refreshing but slightly sharp eucalyptus scent was balanced nicely by using only three rattan sticks.

I’d been to Usotsuki-chan’s place just yesterday, but my nose was already getting used to the eucalyptus smell. The human nose adapts so quickly—call it “getting used to it,” I guess.

“Make yourselves at home.”

Usotsuki-chan said that as she led us to the living room, but she immediately plopped down on the sofa by herself.

“Want me to tie your hair back up?”

Yuu, apparently bothered by Usotsuki-chan’s lopsided hairstyle, made the offer.

“Nah, I was letting it down.”

With that, Usotsuki-chan undid the other side in front of us, letting her blonde hair flow freely. Her twin-tails usually reach her shoulders, but loose, her hair looked longer, almost magical.

On closer inspection, it’s styled with slight waves. Despite being dyed, it’s not damaged at all—a sign she takes good care of it.

“What’re you staring at?”

“I’m not staring.”

I quickly defended myself against Yuu, who puffed out her cheeks. Usotsuki-chan didn’t tease us like usual, just giving a weak smile.

She seemed unusually low-energy today. We know this “off” side of her, though—when she’s not her usual loud, exaggerated self.

This isn’t her typical “off” mode, where she’s just chilling at home. She’s even quieter than usual, which is a bit worrying. I want to at least hear her out.

“If something’s bothering you, I’m here to listen.”

“…Hmm.”

I threw out a light jab to get to the point, and surprisingly, she seemed ready to open up.

“It’s not exactly a problem, but…”

She glanced at me and Yuu, then spoke quietly.

“So… I got confessed to by this guy named Sorimachi.”

“…Oh?”

The name wasn’t surprising—Sorimachi, the first-year from Class C, soccer club.

“A week ago, yeah? He called me out behind the school building and confessed…”

“I see.”

What she described was a typical confession scenario.

A guy from another class, someone she barely talked to, confessed to her.

She wasn’t in a place to date anyone, so she turned him down with a “sorry,” leading to an awkward moment—a pretty standard outcome.

Since he’s in a different class, they don’t cross paths much, but after that, bad rumors about her started spreading.

“But how does that end up dragging Ren-chan into it? Makes no sense.”

“I didn’t do anything.”

Usotsuki-chan turned away, responding sulkily to Yuu’s grumbling.

“That’s all you ever say. Tsuki-chan, I don’t really think this, but you’re not spreading weird rumors about yourself, are you?”

“I’m not! It’s probably because someone saw me talking to Ren-kun or something.”

“Really? But just being seen talking to Ren-chan wouldn’t normally make people assume he’s two-timing, right? You’re not doing anything behind our backs, are you?”

Yuu’s relentless questioning finally got to Usotsuki-chan, who looked up, her eyes sharp as she glared back.

“I keep saying, I didn’t do anything. You seem to suspect me, Yuu-chan, but maybe, from the outside, it just looked like Ren-kun was having way too much fun talking to me?”

“—!!”

Yuu’s eyes widened at Usotsuki-chan’s words. She pressed her lips into a tight line, clenching her fists.

Her face was downcast, her shoulders trembling.

I couldn’t see her expression, but an alarm bell went off inside me. No, it was more like the phantom sound of an ambulance siren Usotsuki-chan might need later.

“Tsuki-chan… you…!!”

“Hey, Yuu, calm down.”

Calm down, Yuu. We haven’t confirmed anything incriminating yet.

I hurriedly stepped in to stop a fight from breaking out over something off-topic.

“Usotsuki-chan, you too. Both of you, just calm down. We can’t solve this if you don’t.”

“…Yeah, you’re right.”

Yuu let out a sigh, taking deep breaths to manage her anger. Good job, Yuu.

“Tsuki-chan lies a lot, so even if there’s a chance this is her doing, I got a bit too emotional.”

“It’s not me this time. Even I wouldn’t spread lies to mess with you two. No way I’d do that.”

“Yeah, right.”

Usotsuki-chan’s got zero credibility with Yuu, and the vibe between them stayed tense.

Honestly, I sometimes don’t get why these two are friends. It’s confusing as hell.

“Yuu, she’s saying this much, so maybe ease up on her a bit.”

“Ren-chan, you always believe Tsuki-chan too easily!”

Yuu stepped closer, looking up at me with one cheek puffed out, but she was back to her usual cute self.

“You’re helping out this time too, right? Usotsuki-chan, come on, be a little more honest. Yuu’s been gathering info for you—show some gratitude.”

“I didn’t ask her to.”

“Tsuki-chan—!”

I held Yuu back as she started to close in on Usotsuki-chan. They really are like oil and water.

“Ren-chan…”

“Yuu, chill. Usotsuki-chan’s just bad at being honest.”

“I’m plenty honest.”

“Come on…”

Usotsuki-chan kept looking away, all huffy. She’s in an especially bad mood today.

Sure, this whole thing is partly our meddling—okay, my meddling—but I’m caught up in it too. I can’t just ignore it.

Either way, we’re not getting anywhere like this.

“Usotsuki-chan, can I ask you one thing?”

“…What?”

Usotsuki-chan looked at me suspiciously. For someone whose thoughts are usually impossible to read, she wasn’t even trying to hide her irritation. Her bold eyes gave her a surprising intensity.

“Did you tell anyone about turning down Sorimachi? Or maybe something happened that could’ve accidentally let it slip to others?”

“I wouldn’t go out of my way to tell anyone. But if he told someone, then… I don’t know.”

Usotsuki-chan’s vague response was understandable.

If she’s telling the truth and didn’t tell anyone about rejecting Sorimachi, it’s possible he shared it with someone, and it spread from there.

“So we can just blame it all on Sorimachi-kun, then?”

“No, hold on, calm down.”

Yuu pulled out her phone, looking ready to take action, and I hurriedly stopped her. I don’t know what she was planning, but I could imagine some kind of disaster befalling Sorimachi, so I nipped it in the bud.

Even if Sorimachi’s indirectly responsible for Usotsuki-chan’s bad rumors, it’s questionable whether he’s the one to blame.

He might’ve had friends cheering him on for the confession. In a typical teenage scenario like that, the people sharing the info probably didn’t mean any harm.

The real culprit is likely someone who got involved with malicious intent.

“I didn’t do anything, so why’s this happening to me…”

“…”

Yuu and I stayed silent, but while I was just confused, Yuu seemed to think Usotsuki-chan wasn’t just the cause but also responsible. Her sour expression and unhidden bitterness said it all.

Usotsuki-chan’s attitude wasn’t helping, and it felt like their relationship was only getting worse.

“By the way, we talked to someone named Nijouin after school today.”

“…Oh, really?”

Hoping to lighten Usotsuki-chan’s prickly mood, I brought up a new topic, and it seemed to catch her interest—a hit.

“You know her?”

“Well… she just keeps calling me her ‘friend’ on her own…”

She still seemed grumpy, but she didn’t sound entirely displeased.

Nijouin, in the same class as Yuu and Usotsuki-chan, is apparently pretty isolated. She seems aware of it and doesn’t actively approach others.

From my brief talk with her, her over-the-top personality didn’t come off as annoying.

She’s probably good at reading the room.

That’s why hearing she stays quiet until after school makes sense—she likely knows how people treat those who talk to her.

Her decision to make an exception for Usotsuki-chan shows good instincts.

Nijouin must’ve sensed a kindred spirit—someone else treated like an outcast—and chose to connect with her.

That choice doesn’t just benefit Nijouin herself.

Her character (or is it her personality?) might be her only misstep… or is that too harsh to say?

No, maybe that very persona lets her understand Usotsuki-chan’s feelings and approach her without hesitation, despite her mysterious vibe.

For someone like Usotsuki-chan, the right distance is forcing your way into her life, or letting her force her way into yours.

“Sure, her one-sided ‘friend’ thing might be a bit much, but Nijouin seems—”

Her actions might be calculated in a way, but that toughness deserves praise. It’s not selfish stubbornness.

It’s the kind of strength that can save someone.

“She seems like a good person.”

“…Yeah.”

Usotsuki-chan nodded reluctantly, almost solemnly.

Seeing that, I felt a certain conviction.

“…Alright, let’s head out, Yuu.”

“Already?”

“Yeah. We got what we needed to know.”

“Okay.”

I headed from the living room to the entrance. Yuu followed, occasionally glancing back at Usotsuki-chan, as if concerned.

Was it Usotsuki-chan’s attitude—not even seeing us out—or worry about this whole situation, or both, or something else entirely?

“Yuu, let’s give her some space for now.”

“…Yeah.”

Urging the kind-hearted Yuu along, we said our “thanks for having us” and left Usotsuki-chan’s house.

On the way back from Usotsuki-chan’s, we stopped by the supermarket to finish shopping (well, mostly me), then headed home.

“Ren-chan… you’re really kind, aren’t you…”

Yuu said it quietly, sounding a bit down.

“What’s that all of a sudden?”

I asked, unsure of her intentions or mood. She’s said this to me plenty of times, but this time felt a little different.

Saying “you’re kind too” would just be banter, nothing deeper.

“…Ren-chan.”

“What?”

For a second, I thought she’d pull the “just wanted to say your name” routine, but she looked determined as she spoke.

“I think kindness is limited.”

“…Oh?”

Kindness, huh? Wait, I don’t quite get it. Let’s hear her out.

“Limited kindness?”

“Yeah. I mean, time, money, energy—they’re all limited, right?”

“That’s true.”

None of those can be infinitely increased—they’re finite resources.

“So what’s your point?”

Yuu didn’t do her usual gesture of raising a finger; instead, she spoke earnestly.

“—Time, money, energy—they’re all finite. So doesn’t that mean kindness, or the time and effort you give to important people, is finite too?”

“You could see it that way.”

“No, it’s a fact.”

“…Yeah, you’re right.”

Yuu looked slightly downward but stated it firmly.

“You’re the type who can’t help but help someone in trouble, right, Ren-chan?”

“Not really.”

“Yes, you are. I know you won’t admit it, though.”

“No, seriously, I’m not going around being recklessly nice to everyone.”

“That’s not what I mean, but… yeah, that’s what I’m getting at.”

Yuu stubbornly refused to change her view of me.

“I know it’s a good thing, the right thing to do, but…”

“Hm?”

Yuu stopped walking. I stopped a moment later and turned to look at her.

“But my feelings… I just can’t help it…”

The sunset painted the sky’s edge a deep red.

Her silhouette stood at the end of a long shadow, outlined in golden light.

“When I see you being kind to others, I can’t help but… you know?”

Her voice trembled. Her eyes, reflecting the scenery with a fierce glow, locked onto mine.

A spring breeze gently tousled her long hair.

Brushing a strand from her cheek, she—

“…If you don’t look only at me, I can’t help but get jealous.”

She said it quietly.

“I see.”

“Does that make you hate me?”

I nodded calmly, and Yuu looked up at me, her eyes searching, almost nervous.

“Nah, I don’t hate it.”

“Really? You don’t think it’s annoying?”

She asked again, as if scared, anxious, yet somehow relieved.

“Yeah, it’s not annoying.”

I said it not just to reassure her but because I genuinely didn’t like seeing her anxious.

“Really? Me getting jealous and always complaining to you… you’re not annoyed?”

“Not at all.”

It’s almost like, what’s she even talking about?

But thinking about it, I’ve felt it too—yesterday and today, Yuu and I have been closer than ever, in a way.

An unexpected touch. A sudden, runaway moment of teenage passion.

We glimpsed parts of each other we’d kept hidden, parts we didn’t know existed.

Childhood friends, neighbors, fake boyfriend and girlfriend—and yet, we felt like we’d touched something deeper, something unknown.

“Why bring it up now?”

“Because, even in front of you, Ren-chan, I say such awful things to Tsuki-chan…”

So that’s what Yuu was anxious about. I already knew she and Usotsuki-chan didn’t always get along, but I was actually impressed they stayed friends without drifting apart.

There’s no way I’d think less of Yuu after seeing their interactions.

“I forced my way into coming along, got jealous, and took it out on Tsuki-chan… You must think I’m such a pain, right, Ren-chan?”

But I didn’t understand why she was so insecure this time.

She was so clingy on the way there, but now, heading home, something was making her anxious. Was she regretting her actions? Girls’ feelings are hard to figure out.

“I’ve never once thought your jealousy was a pain.”

“R-Really?”

“Yeah.”

I stepped closer to Yuu, who was still standing still, and held out my hand.

She reached for it… but pulled back, clenching her hand tightly against her chest.

It was gripped so hard it looked painful, her knuckles white.

“I-I…”

She was trembling.

Scared.

“I want you all to myself, Ren-chan.”

“Yuu…”

There were no witnesses, no passersby.

Her words, spoken without the need to play-act our relationship, were a raw confession from her heart.

A genuine declaration.

“I want you to look only at me.”

Her cheeks flushed faintly, not from the sunset but from her own tension, clear in her expression.

“You… won’t hate me for being like this, right?”

“No way.”

If anything, as a guy, it’s an honor to be cared for that deeply by a girl.

And I think I understand, at least a little, how much courage it takes to say something like that.

“You won’t hate me for getting weird because I want you all to myself?”

“No chance.”

I grabbed her clenched hand, almost forcefully.

“Ah…”

Her tightly gripped hand slowly softened, melting into mine.

The trembling she’d been confirming over and over with words finally stopped.

“You’ve given me so much, Yuu.”

“Huh…?”

Her eyes widened slightly, her lips quivering at my words.

“N-No, it’s not about keeping score…!”

I must’ve caused a misunderstanding—my words came out wrong, making her even more flustered.

I should’ve phrased it better.

“Yeah, it’s not about keeping score. I just want to do something for you.”

I hesitated to say it, but since she’d bared her heart, it felt unfair to only receive her feelings without giving back.

“I want to give you something too. Not because I owe you for everything you’ve done… it’s not like that. I don’t know how to say it, but…”

I laughed, saying I’m more ungrateful than she thinks, and her face softened into a smile.

“Ren-chan…”

“Yeah, well, you know… with my family stuff, I can’t really predict what’s next… there’s a lot going on.”

Yuu, who knows about my home situation, nodded with an “I understand,” but relying on that response felt… wrong this time.

“When I’m with you, I feel at peace, like I can keep going. Honestly… you’ve saved me.”

Yeah. Yuu’s been my salvation.

“But I’m so ungrateful, I don’t think about repaying you. I just think about how fun it is to be with you, how calming, how happy it makes me. Pretty awful, huh?”

“No! That’s not true! Honestly, I’m the one who’s been saved… but I’m the one doing bad things to you, Ren-chan—!”

I shook my head at her denial.

I’ve received so much from her vibrant daily life, and I haven’t given anything back. That’s the truth.

And yet, deep down, part of me wants to make her mine, despite my position.

“I’m ungrateful. I keep wanting more and more from you… wanting to make you mine.”

“—! ♥”

“I want to spend more time together, to be happy with you. Being with you makes me feel that way. I only feel this for you.”

“~~~~!! ♥♥♥♥”

Yuu covered her mouth. The trembling in her hand, still held in mine, stopped completely.

“Ren-chan—!”

“Yuu—”

I gently caught her as she threw herself into my arms.

“If you’ve got time tonight… wanna cook together?”

The words slipped out naturally, almost by accident.

“Really!? I can come over!? ♥”

“Yeah, if you’re up for it… I mean, if it’s not a bother for your family. If your parents are okay with it…”

Her excitement made me feel a bit shy, and despite being the one who suggested it, I got hesitant.

“No way, it’s not a bother at all! ♥ I bet Mom and Dad will be thrilled to send me over! ♥”

“That’s a relief to hear.”

For a moment, I thought, “Her parents are thrilled to send their daughter over…?” but knowing how laid-back they are, I guess it makes sense.

Even though we’re childhood friends and neighbors, it feels like they trust me—a teenage guy their daughter’s age—a bit too much.

“You don’t think it’s a bother, Ren-chan…?”

“I’m the one who invited you. Why would I think having you over is a bother?”

“Oh—right! ♥ Then I’ll come over as soon as I get home! ♥”

“Y-Yeah.”

“It’s our collaboration! ♥ Let’s make it delicious! ♥♥”

“Looking forward to it.”

Yuu’s over-the-top energy overwhelmed me, but I found myself enjoying the exchange, laughing to myself. My life, which could’ve been bleak, is filled with moments like this because of her.

“…Yuu. Thanks.”

“…? You’re welcome! ♥”

She replied with her usual goofy grin, not quite getting it but going along anyway, still clinging to me.

Smiling back, we walked together down the twilight path.

“Girls’ fights are scary, huh?”

“Ahh! ♡”

“Unlike guys’ fights, they don’t openly threaten each other. It’s more like they corner you with logic.”

“Th-There! ♡”

“Pointing out contradictions.”

“Not there! ♡ Don’t poke there! ♡”

“Bringing up old grudges.”

“Don’t take it out! ♡ Don’t… it’s too much! ♡”