As A Result of Trying To Live An Erotic Slow-Life, I Have Become The Underground Ruler of This Upside-Down Otherworld - Chapter 93: Chapter Four Interlude: Sex Study Session

Chapter 93: Chapter Four Interlude: Sex Study Session

“Ahem… With that, I’d like to conduct a study session on the female body.”

“Yes! Arius-sensei!”

What’s this? What’s with the “teacher” thing?

No, I get it, I’m fine, I’m perfectly sane.

Even with a naked Serika standing in front of the desk serving as a podium, huffing excitedly, and all the participants somehow having sparkling eyes, I can properly grasp that this is reality.

“A-Arius-shama♡”

“Yes, the teaching material should remain quiet.”

“Hai♡ Sorry♡”

Maybe it’s a dream after all.

Well, anyway.

This is the result of consulting Mia about how to control my Conquest Sight.

According to her, it’s a practice method that kills two birds with one stone.

Indeed, it’s practice for me to handle Conquest Sight, and it allows everyone to deepen their knowledge about sex, but… seriously?

In a way, this is public exposure play, isn’t it? Isn’t that a bit too advanced? Who’s “everyone” here? It’s literally everyone. Is Serika okay with this? Won’t she later declare this a dark chapter in her history?

“Fuu♡ Fuu♡”

She seems perfectly fine.

Well, alright.

It’s true that ugly women tend to lack sexual knowledge.

There’s no health and physical education class like in my previous life, and the sex how-to books circulating in society are mostly written from the perspective of how to “use” men.

So, Mia’s suggestion that I teach the things I want everyone to remember while practicing Conquest Sight makes sense, but…

Things I want them to remember, huh.

“Then, let’s get started.”

I focus my consciousness on my eyes while holding the magic stone.

The magic stone I’m holding is like a mana tank; when I try to use mana while holding it, it consumes the mana stored within the stone rather than my own.

I’ve already received lectures from Mia and Sonya on basic mana control methods, so I can manage somehow, but apparently, I’m using 10 units of mana when 5 would suffice.

They say the only way to get good at it is through practice, which is why it’s taken this form.

“There’s something called erogenous zones. These are parts that feel incredibly good when touched. They can be innate or developed later. For example, with Serika—”

Looking at Serika through Conquest Sight, I intuitively understand her weak points.

Right now, Serika wants her butt spanked, but since this is a study session, I’ll hold off on that.

It seems her innate erogenous zone is her navel, while the one I developed through sex is her nipples. I can tell that too.

“Innate ones include the navel.”

“Nhiu♡”

“And the one developed through sex with me, in other words, the acquired one, is her nipples.”

“Nkyu♡”

When I tickle each with my finger, she reacts well, even squirting a little.

“T-Teacher…”

“Yes? What is it, Shuri-kun?”

Turning to Shuri, whose cheeks are flushed, I see her swallow softly.

“D-Does that mean even parts that don’t feel good now might feel good later?”

“The answer would be: there’s a possibility.”

A typical example would be the anus.

Anyone can attempt to develop it, but whether they can derive pleasure from it depends on their predisposition.

Of course, with the right techniques, anyone can enjoy anal sex, but it’s not guaranteed that their ideal partner will be a sexual expert skilled enough to develop it properly.

“Possibility?”

“Yeah, that’s right… Take Serika here, for example.”

“Hai♡ Eh, a, ku… kufu, kuhyuhyu, ahahaha, Arius-shama, ticklish, ahahaha!”

I suddenly tickle Serika’s armpit.

Conquest Sight indicates it’s an erogenous zone, but with this level of ticklishness, it’d take extra effort—probably caressing it alongside a more dominant erogenous zone to develop it.

Even if done skillfully, it’s uncertain whether armpit stimulation alone would bring her pleasure.

“Ah, I see. Thank you, Teacher, I understand… Um, where would mine be?”

“The soles of your feet.”

“A-Feet… Thank you.”

It’s pretty impressive that she grasps it just from that.

Judging by Shuri’s demeanor, she’s not uninterested, but she seems resistant to me doing anything with her feet.

It could be managed with some creativity, like footjobs. But, hm, would she even go for that? Hmm.

“Well, that’s how it works. Erogenous zones vary by individual, of course, but they’re also tied to personal kinks. Discuss how to handle them with yourself and with me, your partner.”

“Hahya, hai!”

Looking around, everyone seems to nod in understanding, though their faces are all bright red.

What I want them to remember:

Sex is a collaborative effort. One side enduring to cater to the other’s kinks won’t last long.

The idea that love means accepting everything about your partner is a delusion.

“I’ll add one disclaimer: going forward, I don’t plan to use Conquest Sight during sex with you all.”

At that, everyone tilts their heads cutely.

I’m using it now because this is practice, but the goal is to master Conquest Sight so I can choose not to use it.

“For someone sexually inexperienced… Well, it ends up this way, but thinking that sex is just masturbation using your partner’s body isn’t a good mindset.”

“Masturbation using your partner’s body?”

Towa’s eyes widen as she asks.

To them, it probably sounds like I’m telling them to use me for masturbation, so the surprise makes sense.

“Yeah. That means communicating what you want done to you. Baring your desires isn’t easy. It’s something you can only do with someone you trust.”

Especially in sex.

It’s an act of exposing your most vulnerable parts, your dirtiest parts.

Accepting your beloved because you love them doesn’t mean enduring.

That’s what gaining this ability made me realize.

I’ve been too focused on fulfilling my partners’ desires during sex.

It’s a simple thing.

I realized I was contradicting my own beliefs.

“It might not click right away. So, Serika.”

“Yes♡”

Let’s start by baring my own desires.

As a sort of rehab. It’s a bit unusual and way too indulgent, but—

※

As I pull down my pants, I feel all eyes on me.

As shameless as ever, my boy stands tall, practically shouting, “Ready to fire anytime!”

And then—

“Serika, not like that.”

“A-Ae?”

Serika kneels, mouth open, ready to go, but this time it’s a bit different.

“Suck it.”

“Ai♡”

At my words, she eagerly takes it in without hesitation.

Well, to be blunt, she’s not great at it.

“Serika, first, I want you to lick up the underside.”

“Nba♡ Y-Yes♡ Sorry, Arius-sama♡ Nre…♡”

To be even blunter, Serika is by far the worst at pleasuring a man.

Comparing is a bit unfair, but still.

Anyway, Serika’s so specialized in receiving that she’s not skilled at caressing or servicing.

“Yeah, there, there. Do it harder.”

“Yes♡ Arius-sama♡ Ne♡ Chuu♡ Juju♡ Rero, ree♡”

It’s partly because I’ve been responding directly to her desire to be used.

But, well, I have a ton of things I want Serika to do for me.

“Serika, your breasts, use your breasts too.”

“Yes♡ Nsho, tto…♡”

“No, Serika. First, let me feel your nipples on my cock. I want to know your breasts in all sorts of ways.”

“Hau…♡ Y-Yes♡ As you command♡ Arius-sama♡”

The firm sensation of her nipples against my tip.

Maybe because I said “all sorts of ways,” she’s using her nipples like she licked the underside earlier, attacking the ridge of my glans with them.

“Nn♡ Ku, fuu♡ T-This♡ I-I feel good too♡”

“Yeah, feel good too, Serika.”

“Yes♡ Afu♡”

I want her to do a nipple job, and since it’s Serika, those massive breasts—

I want to experience a vertical paizuri with them. Not me using her, but her doing it.

“Haa♡ A, fu♡ Nn♡ I-It feels good♡”

Serika murmurs softly.

Right now, she’s doing it because I ordered her to, following my instructions.

“Nn♡ Nna…♡ Ku, fu♡ Au♡”

Gradually, she starts focusing on what feels good for her.

Specifically, the nipple job seems to be it—she’s now rubbing both breasts, their tips, against my cock, enjoying herself.

That’s a good sign.

Serika’s got the strongest tendency to prioritize me, so seeing her act for her own pleasure is heartening.

There’s a hint she’s picking up on that intent too, but starting like this is fine for now.

“Good girl, Serika.”

“Yes♡ Thank you♡ Arius-sama♡”

I stroke her head, telling her it feels good.

Now, how are my students doing?

“A♡ A♡ A♡”

“—”

“…Wow.”

They’re clearly split into those using this as fap material and those earnestly studying.

It’s a weird vibe, but ignoring it defeats the purpose of this session.

“Now, men obviously have erogenous zones too. I’ve got my cock out here, but some guys feel good from their nipples, and some love kissing. It’s not just about physical touch—situations or visual stimulation can also tie into arousal. The fact that everyone has different erogenous zones doesn’t differ by gender.”

“!?”

Good, good, they’re listening properly.

“For me, I like having my ears licked. It sends shivers down my spine.”

It’s naturally embarrassing, but I’ll bare it all.

I’m looking forward to seeing how many try it next time we’re together.

“Having someone kneel and suck me off while I’m standing like this is also a turn-on. Seeing someone serve me is exciting.”

Oh, crap.

Saying this stuff is getting me worked up. I’m getting excited.

“I can’t help but want to grab their head and use it like an onahole. I want to thrust hard into their mouth, deep into their throat. I want to shoot straight into their stomach.”

“—♡”

Serika looks up at me, begging with her eyes to do it, but not yet.

“Of course, one shot doesn’t end it. I’d flip them over, put them on all fours, and mount them from behind. Right in front of me, a pussy or an anus. Should I stick my fingers in first? Or lick it all over… Ah, if it’s a smooth pussy like Mia’s, I’d definitely dive right in.”

“Hiu♡”

Mia, suddenly called out, trembles.

Did she cum? That’s rare.

“Oh, I’d love to see Ririeru’s ass shaking too. Teasing her, holding off on penetration, letting it turn into an assjob, making her beg for it.”

“Anata-samaa♡”

Ririeru, probably imagining it, melts with a dreamy expression.

That face is unfairly beautiful no matter what.

“Finally sliding it in… Yeah, I’d want Shuri and Kazune licking my ears again. But Kazune’s all about kissing, right? Getting licked by Shuri while kissing Kazune—that’d be amazing.”

“G-Goshujin…♡”

“I’ll do it, do it… Lots, lots♡”

Unconsciously, Shuri flicks her tongue slightly, and Kazune bites her finger.

Nice, I’m counting on their combo.

“After shooting again… Well, first, a cleanup, right? That double blowjob the other day was unreal… I’m already looking forward to next time.”

“M-Mia! I-I can do better! I’ll clean, clean it!”

“I-I can too! I’ve been practicing properly!”

Glancing at them, I’m like, how eager can you get?

Mia and Luuri are the ultimate service duo.

“Then, when things are heating up, lining up Serika and Sonya’s asses for a taste test would be nice… Serika’s ass-pussy, Sonya’s pussy.”

“Nbu♡ Pwa♡ Yes♡ Yes♡ B-Both are usable♡ They’re usable♡”

“Of course♡ My Lord♡ Either one♡ Use them as you please♡”

When did you start sucking again, Serika? But great response—you’re my favorite for saying that.

Sonya, you say it proudly, but no passing out after three thrusts next time, okay? Or maybe your ass is the way to go?

“After enjoying that… The finale’s gotta be Towa, right? Pounding hard, then falling asleep on her chest.”

“Yes♡ I, Towa, am always waiting♡”

Towa’s reliability is insane… She fits anywhere—main course, appetizer, whatever.

She’s always appetizing, that’s Towa.

“Serika.”

“Yes♡ Ne♡”

She gets my intent and opens her mouth wide.

This moment feels amazing, but we can feel even better together.

“Nbufu♡”

“Like this! I’m spewing ridiculous desires, but!”

I want to know more, and I want them to know more.

“You all! I want you to say it too!”

“Ngo♡ Bufu♡ Go♡ Ngu♡”

The more I thrust, the more Serika’s face melts.

She’s trying, clumsily, to wrap her tongue around me to make me feel good.

“That way! We can have sex that feels even better than now!”

“Ngu♡ Juzo♡ Zuzuzuzu♡”

Ah… This is unreal.

I’m close—actually, I’ve been holding back for a while.

“Serika, Serika!! I’m cumming, swallow it! Don’t spill!”

“Nbu♡ N, ju♡ Jujujuu♡”

“Ku, ooooh!”

I unleash my full desire.

“…Ngu, goku, goku… Pwa♡ T-Thank you for the meal.”

“Yeah… That was the best, Serika.”

I feel refreshed.

Looking around again… Well, yeah.

“So, how about it… Practice saying your desires without holding back?”

“—Yes♡”

An invitation to everyone, their eyes now full of hearts.

Seeing is believing. It might be a convenient interpretation, but one battle’s worth more than one look.

“Then… Shall we do it!?”