I Achieved a Happy Ending in a World Where Erotic and Grotesque Things are Commonplace, but I Hadn't Thought About What Would Happen After That. - Chapter 7 If you think your sister is erotic, then various troubles will arise.

Chapter 7 If you think your sister is erotic, then various troubles will arise.

“My sister thought I was being perverted again, and that could lead to all sorts of trouble.”

“Onii-chan.”

“Huh!? “

After hunting youkai and meeting with Kaguya, this is what happened.

I thought about stopping by a convenience store along the way, but it was swarming with what looked like delinquent college students, so I passed.

Returning home with a slight regret for not buying any ice cream, I found Inori waiting for me in front of the house.

“Where were you?”

“Where… I was out hunting youkai.”

“… I knew it. Are you hurt?”

“Me, get hurt? I wouldn’t do that to you, Mom, or Dad. I don’t want to worry you.”

“I see… Oh, it has gotten warmer, but it’s still cold at night, right? Why weren’t you wearing a jacket?”

“The jacket… I lent it to a friend.”

A friend… Well, that’s probably accurate.

The relationship between Kaguya and me isn’t something that can be summed up as ‘just friends’… No, saying that to a friend is rude.

“Hmm…? “

“Inori?”

Inori stared at me intently, then suddenly approached.

She sniffed at me with a ‘kun-kun’ and mumbled something about the scent being unfamiliar, as if talking to herself.

“… What are you doing?”

“Nothing, I was just thinking who that woman you were with was.”

“That’s why I said you’re a friend.”

“But it’s a strange scent, isn’t it? It feels… from an instinctual level, it doesn’t feel human.”

“… You’re amazing, Inori.”

I sniffed my own clothes just to be sure, but I couldn’t make out anything specific. However, there was a faintly sweet scent lingering, so it was likely that Inori had detected Kaguya’s scent. Whether women are generally more sensitive to scents or not, if she had such thoughts about Kaguya, it’s quite the intuition… Truly, my sister is something else.

“Well, anyway, you don’t need to worry about me.”

“Okay.”

“… You agreed quite readily, didn’t you?”

“If Onii-chan says so, then it must be true.”

“I see.”

“Yep.”

This was… should I be pleased that she’s perceptive, or should I be wary because I can’t fathom what she’s thinking?

“… Sigh.”

“Tired?”

“A little… I guess I overextended myself with the encounter with Kaguya.”

It seems I’ve worn myself out with the encounter with Kaguya. That woman… Just standing there, she exudes an eroticism that’s hard to ignore. Her appearance is one thing, but her aura, the way she talks, her voice – everything is suffused with a sensuality that I wish she’d tone down.

(… But, as I thought in my past life, there’s no denying her attire is questionable.)

She has her kimono arranged to reveal the valley of her breasts, but how does it stay in place like that? Surely… it can’t be that some erotic power is at work, allowing it to defy gravity, can it?

“… I don’t get it.”

“What don’t you get?”

“Never mind.”

Afterward, Inori continued to stare at me silently as we entered the house together. As I headed towards the living room, I found my parents chatting and laughing, greeting me with an ‘okaeri’ despite not knowing I had been out.

“… How do you know without me saying anything?”

“It’s just a parent’s intuition. It’s about our son, after all.”

“Of course, it’s about our son.”

Just that… just that was enough for my parents to understand me.

… Damn it, lately, I’ve been constantly plagued by erotic delusions, and I’m not worthy of such wonderful parents.

I really love you, Mom, Dad.

“Phew.”

“Why the smug face?”

Well then, I guess I’ll take a quick shower and go to sleep!

However, the one who greeted me when I returned to my room after showering wasn’t Inori… or at least, that’s what I thought until I was struck by a shock like being hit by lightning.

“Welcome back, Onii-chan.”

“That’s not just a welcome!! “

I might have yelled at Inori louder than I ever had before. I might have even shocked my parents downstairs, but at that moment, I didn’t care… well, I did, but it was overshadowed by something else.

“Inori… what have you done? Why are you wearing something like that!? “

“What do you mean? It’s pajamas. I wear this to sleep.”

“…………… “

Pajamas… yes, I understand they’re pajamas… but the problem is why such pajamas?

It’s not unusual to wear warm, fluffy pajamas given that it’s still a bit chilly at night, as Inori had mentioned… but, but what is that!?

“What is that!? “

My finger pointed to the area just below Inori’s neck… where an impossibly large bulge for a middle schooler was nestled, a heart-shaped cutout revealing a tantalizing gap.

“… Is this what you’re curious about?”

Inori, her expression blank, brought her fingers to the hole… sliding them into the valley of her chest, spreading it open as if to welcome something in.

“That’s not it! It’s not the cleavage that’s concerning, it’s that hole!”

“The hole, you say? Look, it’s like it’s invitingly open, isn’t it?”

“Stop it, stop it, stop it, stop it, stop it, stop it!!! “

Something’s wrong… I mean, Inori’s acting strange, really strange! I rushed out of the room and back to the living room, where only my mother remained, my father having disappeared. She looked at me, wide-eyed at my flustered state, but I didn’t have time to care.

“Mommy, I’m in trouble!”

“What’s wrong? Tell Mommy.”

I don’t usually call her ‘Mommy,’ but this serious incident proved my panic.

“It’s Inori… she’s wearing some crazy pajamas!”

“Crazy pajamas?”

“Is it that bad?”

“Huh!? “

I backed away from Inori, who had followed me, hiding behind my mother. I hoped my mother would scold us, brothers and sisters, if something were to happen because of such stimulating pajamas… I mean, pay attention! But my mother said something completely unexpected.

“It’s not weird at all, is it? Inori looks cute.”

“Right?”

“…??? “

Wait… what?

This heart-shaped cutout fashion is normal…?

Well, I guess since I’m a guy and both Inori and Mom are women, such feelings are… I can’t really argue with that, but… wait, what?

(… Wait a minute.)

I suddenly remembered a crucial fact. This world isn’t the one I came from; it’s a world where eroticism is the norm, and nothing but eroticism remains. When I considered this, the clouds in my mind began to clear. The women here naturally have voluptuous bodies, and many of them wear provocative clothing… With beauties like Kaguya around, and if no one bats an eye at that, then it’s my senses that are out of sync, not theirs.

(… Is that how it is?)

No, if I accept this, I’m done for!

But it’s not about accepting it; there’s no need to accept anything… because I find it erotic… because my inner beast is about to break free, and resisting it is perfectly normal, isn’t it?

“Goodnight, Onii-chan.”

“… Huh?”

“I’ve already decided.”

“Oh my, that’s fine. You could have tempted him even more.”

“Mom, what are you saying?”

“Inori loves Masayoshi, after all. And there’s no blood relation between you… “

“Love for me and all that… is that really the issue… huh?”

Wait, what did Mom just say?

That there’s no blood relation between Inori and me…? I must have had an incredulous look on my face.

But the sight of Inori and my mother giggling dispelled the lie.

… Pfft, so that’s how you tease your son, huh?

“I’m sorry, okay? I’ll make sukiyaki tomorrow, so can you forgive me?”

“Sure.”

With that settled, I returned to my room, only to find Inori casually following me in and climbing into my bed.

“Didn’t I tell you? We’re sleeping here today.”

“…………… “

“Come on, let’s sleep.”

This was… it seemed I had no intention of leaving the room.

“We can just cuddle up and sleep.”

“……………”

But that’s… damn it, because she’s my sister, I might be okay with it, and my willpower is slipping. Half resigned, I got into bed where Inori was waiting, and she snuggled up close to me.

(Oh god… she’s grown up so beautifully… why did she have to develop like this… and she’s being so sly about it, too!!)

If things keep piling up like this at home, just like they do at school… I really need to do something about this… Damn it!

I could go to those kinds of establishments as much as I want, as long as I pretend to be older… Alright, that’s settled.

“What are you thinking about?”

“Nothing much?”

“Yeah…? Hey, Onii-chan.”

“…What is it?”

“The fact that we’re not related by blood… that’s not true. You and I are properly brother and sister, okay?”

“I already know that…”

But for a moment there, I really believed it.

Inori is my sister… an important sister, and that will never change… Even if she’s this erotic, Inori is an irreplaceable sister to me…

“Since we’re proper brother and sister, we can always be together… no matter what happens. But I also feel guilty for almost believing it. I think Onii-chan would take responsibility and stay by my side forever… and that’s fine, too…”

…This must be a hallucination I’m hearing because I’m tired.

　▼▽

“I’ve been thinking about going to an adult store and getting some help,” I muttered to myself, the thought crossing my mind more frequently these days.

Ever since that night, I hadn’t seen Kaguya again, and my jacket was still with her… without a way to contact her, meeting again seemed difficult… but as long as I continued hunting youkai, I figured we’d run into each other eventually, so I didn’t worry too much about it.

However, that day at school was chaotic from the morning on.

“Today, we have a transfer student to introduce.”

A transfer student…?

I thought it was rare to have a transfer student at this time of year, and I casually assumed they might be involved with the youkai…

But when I heard the voice, my thoughts came to a screeching halt.

“I am Kaguya Gensetsu… nice to meet you.”

“… Huh!? “

Before I could even look towards the teacher’s desk, my gaze was captured by the radiant beauty that had appeared.

What was this…? An ominous feeling washed over me, and although I was terrified, I couldn’t look away… Then, someone stopped right in front of me.

“…? “

The silent stares from my classmates were focused on me and… the person standing before me.

And finally, I realized that the person was her—Kaguya.

“…Damn.”

“Fufu, hello again. I’ve come to return the favor.”

Handed to me was a neatly folded jacket… the one I had lent her that night.

“Thank you for that night. I couldn’t forget the warmth you gave me, and now I find myself wanting to spend time with you at school, too.”

In that instant, screams erupted throughout the classroom.

And most importantly… I could see Aika struggling to contain her shock at Kaguya’s stunning appearance, and I felt an overwhelming urge to flee the classroom right then and there.