Chapter 155: Yuna's "Lesson"
“Why is Yuna here…? And what do you mean by ‘lend a hand’?”
I had no idea what Yuna was getting at.
I knew she had a spare key from Dad, but she’d never come into the apartment before.
“During lunch, I talked to Souta in the clubroom. Turns out he’s struggling with sex with Alice too, so I figured—why not teach him hands-on?”
She said it as casually as explaining a school subject she was good at.
“That’s obviously a terrible idea?!”
“…Why?”
“Why?! You’ve never even done it before!”
As far as I knew, she had no experience with men.
“Huh? …But I’ve done it with Alice plenty of times.”
Yuna dropped that bombshell like it was nothing, and Souta’s eyes nearly bulged out of his skull.
“You… with your sister…?”
Under Souta’s horrified stare, I floundered to explain.
“N-no?! That only started after we got back from the other world! I never laid a hand on my little sister before then! And besides, Yuna in this body feels more like an older sister anyway, so—”
“R-right…”
Souta averted his gaze like he’d just heard something he shouldn’t have.
…Somehow, I think I just dug myself deeper.
“Anyway, there’s no way I’m letting Yuna do anything with Souta!”
“But you’re doing it?”
“Th-that’s to save Alicia!—”
“So helping with that is wrong?”
“You can’t just throw away your first time like that?!”
“It’s not like having experience changes your life. You’re overreacting.”
“No means no! …Especially not with Souta.”
As your brother, I won’t allow it!
Not to mention, Mom and Dad would kill me.
I wanted Yuna’s advice, not practical lessons.
“Why not? Who I do it with is my choice, right? …I don’t mind if it’s Souta.”
“You should mind! Have some self-respect!”
Even if they’ve known each other forever—
Sure, he’s a good guy as a friend, but deep down, he’s a total horndog! All men are wolves in sheep’s clothing!
“…Then, what if I don’t do anything with Souta?”
“Huh…?”
“I’ll just help Souta with you. That’s fine, right? I only offered because I thought it’d be unfair if I didn’t participate, but I don’t actually have to…”
Wait, that—
“No, that’s still a problem! A huge one?!”
“Why? You’re so stubborn, Alice…”
This isn’t the kind of thing you do as a group!
“It’s just… not normal?”
“Since when has anything about us been normal?”
Yuna shrugged like that was the obvious part.
“If you really hate the three of us, I could just teach Souta alone…”
“How does that make it better?!”
That’s worse!
Hey, Souta! Stop eyeing my sister like that!
You absolute degenerate!!!
“You’re having a great time with Hisui, but Souta’s still struggling. Don’t you think that’s sad for him?”
“Th-that’s—”
For guys, being compared in that department is extremely sensitive.
And when it’s your own siblings? Even worse.
Souta only just lost his virginity—he’s still insecure, his heart as fragile as a newly molted insect… probably.
“Ugggh, fine! FINE!”
I guess this is the giving part of “give and take.”
If Souta ends up bad at sex because of me, I’ll never live it down.
“Okay! Fine! …The three of us.”
…Goddammit.
“But no touching Yuna! No taking clothes off, no nothing. That’s the bare minimum.”
“I’m fine with that… Souta?”
“Y-yeah. I’m the one getting help here…”
Souta let out a long exhale.
Half relief, half disappointment, I bet.
…Like hell I’m letting him enjoy this too much.
“Alright, let’s get changed first.”
Since we came straight from school, everyone was still in their uniforms.
If things got too heated like this, Yuna’s underwear might end up showing—that’d be way too indecent.
"Change into... what?"
"Gym clothes, obviously."
"O-oh, right..."
And so began the changing session.
I made Yuna change in the bathroom.
"You're way too overprotective, Alice. It's not like my underwear's gonna disappear if someone sees it..."
"It will disappear!"
If Souta remembered seeing it, my mental peace would be shredded.
After shoving Yuna into the bathroom, I quickly changed from my uniform into gym clothes. I could feel Souta’s eyes flickering over me, but hiding my underwear while changing is a girl’s basic skill—too bad for you.
Once changed, Yuna and I sat on the bed while Souta took the chair by the mini-desk.
An awkward tension filled the room.
Three people in gym clothes, crammed into this tiny space—it was an unnatural sight no matter how you looked at it.
"Alright, let’s get started?"
Yuna shuffled closer on her knees, placing her hands on my shoulders from behind as she made her declaration.
"First question for Souta: Where should you touch a girl to make her feel good?"
"Uh... chest, or... down there...?"
"Mm—"
Yuna crossed her index fingers in an X.
"The answer is everywhere. Those places are sensitive, so touching them right away can be too intense or even painful. You gotta start by touching her all over first."
Her fingers brushed the nape of my neck, gliding lightly over my skin until they reached my collarbone.
The barely-there touch sent a shiver down my spine.
"Gently, no rushing. See? Alice likes the back of her neck and behind her ears too."
Having my weak points pointed out verbally was beyond embarrassing.
"Telling her what you're doing helps too. Alice gets flustered easily, and that embarrassment turns into pleasure for her."
"I-I’m not—"
Yuna pressed a finger to my lips before I could deny it.
"Hehe, still gonna say no? Even when your body’s reacting like this...?"
Her whisper buzzed in my ear, sending tingles through my skull.
"You’re embarrassed but happy Souta’s watching, right?"
"N-no?!"
I’m not some kind of pervert!
"Souta, quit staring so much..."
He’d been glued to us this whole time. I wasn’t even sure he’d blinked.
"No way I’m not looking."
A merciless reply.
In a last-ditch effort, I covered my face with my hands to escape his gaze.
"So, making her feel super embarrassed is key."
"Got it..."
No, you don’t "got it"!
Idiot...
"Guys just need their bodies ready, but girls need their minds ready too."
"R-right..."
After that, I was at Yuna’s mercy.
She knew all my weak spots, and between that and the sheer absurdity of the situation, I melted fast. Before long, Souta—prompted by Yuna—started touching me too, and...
Being at the mercy of both of them meant being assaulted by relentless waves of stimulation from completely unexpected angles.
At first, Souta's touches were clumsy, but he quickly adjusted by mimicking Yuna's techniques—his ridiculously fast learning ability was almost unfair, and somehow that irritated me.
"There's no need to rush or use force. You gotta build it up slowly, like simmering something on low heat."
Yuna's "lessons" continued after that.
The constant barrage of pleasure made my sense of time blur.
"I'd heard the rumors, but... Souta, you're amazing..."
Before I realized it, Souta had stripped off his gym clothes.
I'd been stripped bare at some point too, but that hardly mattered anymore.
"H-Hey!? Yuna, you can't look at this!"
What the hell are you showing her, you idiot!?
"'This'...?"
Souta gave a wry smile at my phrasing, scratching his cheek with a finger.
Just cover it up already!
What if this has a bad influence on Yuna!?
"Got it... So I just need to make sure she can't see it, right?"
With that, Souta leaned over me.
Sure, sheathing a sword hides the blade—but that's not the point here!
"W-Wait! You moron!?"
"Wow... ♡"
It was the first time we hadn't used lubrication, but my body offered little resistance. If anything, I melted embarrassingly fast.
Today, Souta was different.
He seemed less focused on his own pleasure and more intent on figuring out how to make me feel good.
——Some time later.
What the hell are you doing, Yuna!?
I noticed Yuna beside the bed, her hand slipped inside her gym shorts.
A stifled, breathy whimper escaped her lips.
No way was I letting Souta see this side of her.
I reached up and cupped Souta's face, forcing his gaze onto me.
"Souta, look only at me. (If you look at Yuna, I'll kill you.)"
"O-okay..."
Whether he sensed the unspoken threat or not, Souta obliged, albeit confused.
Good...
I kept my eyes locked on his, maintaining my surveillance.
And then—things resumed.
Wait...
This is... kind of embarrassing—isn't it?
Of course, Souta's face was right there.
Maintaining eye contact meant every little reaction of his was laid bare—which, in turn, meant mine were too.
But I couldn't afford to stop watching him.
I gritted my teeth, resisting the urge to look away.
My vision, my mind, my body—everything was saturated with Souta.
His expression was utterly, blissfully undone.
...What kind of face am I making right now?
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