Chapter 77 — Together, the Three of Us (2): Different Ways to Use Them?
I do things systematically.
I, Kang Do-hyun, am a systematic creature. I majored in psychology — experimental design, variable control, repeated measurement. That is how I understand the world.
Fuck. It's perfect.
Sex is no different.
Two days after the first night.
The maids' room, lit by three candles. Lighting matters: too bright and people tense up, too dark and they grow anxious. Three candles is the optimal brightness.
Mia and Nia sat side by side on the bed in their nightclothes, shoulder straps already half slipped down. Having made it through the first night, their threshold of shame had lowered.
At the sight of those two bare shoulders with their fallen straps, my lower belly gave a tingling pull. Fuck — I hadn't even started and my cock was already reacting. Hold it down. If the one who proposed the lesson gets hard first, systematic goes right out the window, along with everything else.
It twitched anyway.
"Now then — today we're going to find the way that fits each of you."
"Finding it?"
Mia tilted her head, silver hair swaying.
"In the direction that plays to each of your strengths."
"Strengths?"
"Mia, you're proactive. Bold. So service suits you."
"What's service?"
"Doing it with your mouth."
Mia's eyes went round. Three seconds. Five seconds. Understanding arrived.
"Oh!!"
Her cheeks flushed red.
"...With my mouth?"
"With your mouth."
Mia opened her mouth and shut it. Opened it and shut it again. Like a fish.
"I-It's big, though. Will it even fit?"
"You don't need to take all of it. Just the tip."
"Just... the tip..."
Mia looked at my lower half. She was picturing it — her eyes darted back and forth.
Mia's psychological pattern: from fear to curiosity, and from curiosity to challenge. Required time, roughly ten seconds.
"I'll try it!"
A decision in ten seconds. That's Mia for you.
"And Nia."
Nia flinched. She always flinches when her name is called.
"Nia, your senses are sharp. You feel things deeply. So penetration is the right focus for you."
"Pene... tration..."
Nia's face flared red, explosively so. Last night had resurfaced in her memory.
"You felt it yesterday, right? That sense of something swelling up inside you."
"..."
Instead of an answer, she nodded. Very slightly.
"I'll teach you how to feel it more deeply."
Nia's hand clutched at the hem of her nightgown. Fear and anticipation sat there together. I didn't rush to a conclusion based on her eyes alone.
"Do you want it?"
I waited until Nia said "yes" with her own mouth. Less efficient — but this is the right way.
Mia first.
We undressed — I went first. Mia knelt in front of me: I sat at the edge of the bed, and Mia on the floor.
"All right, I'll teach you. Hold it with your hand first."
"L-like this?"
Mia's hand closed around it. Such a small hand — far too small to wrap around all twenty-six centimeters. Even both hands couldn't cover it completely.
"It's hot."
"Yeah. It's supposed to be."
"And... hard. Like a rock."
"Thank you."
"That wasn't a compliment..."
Mia turned her face away. But her hand didn't let go. Curiosity had beaten out shame.
"Now move it up and down. Slowly."
Mia moved. Awkward — no rhythm, stop and start in fits.
"Don't grip it like a guitar string. Try it like you're wringing out laundry."
"Laundry...?"
"You're a maid — you're good at laundry. Use that feeling."
Mia made an oh! face, and the motion of her hand changed. Definitely different. Map a technique onto a motion the body knows, and the rhythm it remembers comes out.
"Oh, you're good at this."
"Really?!"
Mia brightened instantly — the type that responds to praise on contact. A well-developed reward circuit. Praise can reinforce behavior; that's Psychology 101. Reward a good behavior and the behavior grows stronger.
"Now, your mouth."
Mia swallowed. Her spit. Nerves.
"Just the tip. Like you're eating ice cream."
"What's ice cream?"
"...A cold treat. You lick it with your tongue to eat it."
"Oh! Like icy sweets? The kind they sell in summer!"
"Yeah. That."
Mia nodded and stuck out her tongue. Carefully. It touched the tip.
"...It tastes salty."
An honest review.
"A little more."
Mia licked. Once, twice. Her tongue's movements, awkward at first, gradually found a rhythm. Mia adapts to new things fast — a hallmark of the extrovert. High motivation to approach unfamiliar stimuli.
"Now take it in your mouth."
"Mmm..."
Mia opened her mouth as wide as it would go. The tip slid in. Hot and wet.
Fuck, that feels incredible.
"Mmph..."
Mia's eyes went wide. Her mouth felt stuffed full — the girth of twenty-six centimeters was a challenge even for her lips.
"Wrap your tongue around it and suck."
"Mmm... mmph..."
Mia tried. Awkward. Her teeth grazed it.
"Mind the teeth."
"Mmph! I'm sorry!!"
She pulled back, apologizing, eyes round with alarm.
"It's fine. Again."
"Okay!"
Eager. The type who doesn't stay discouraged by failure. High resilience.
She took it in again, more carefully this time — lips folded over her teeth, tongue cradling the underside.
"Mmm... schluck..."
Sounds. Wet sounds, from Mia's mouth.
Her face was red, moisture welling in her eyes. Her mouth wasn't big, and it was a struggle. But she didn't stop.
That's Mia. Charge straight through. Once she decides, she executes.
From the side, Nia was watching — from the bed, clutching the hem of her nightgown, face red as a tomato.
"Nia, your face is red."
"...It's not."
"It is~"
Mia pulled her mouth free to say it, a thread of saliva still stretching between us.
"Sis!! Focus!!"
Nia shouted — louder than usual. Startled by her own voice, she clapped a hand over her mouth.
"Hehehe, Nia just yelled~"
"I d-didn't yell!"
Twin comedy. Sisterly banter, of all things, in a situation like this. This combination is cheating.
...Though the one enjoying it even while knowing full well it's cheating is the most hopeless of us all.
"Mia, keep going."
"Okay!"
Mia took it back into her mouth. This time she found a rhythm — in and out, in and out, tongue working the underside.
"Mmm... schluck... mmph..."
Good. For a beginner, genuinely good. Enthusiasm compensates for technique.
I left her senses untouched. We had agreed that if things got too hard for Mia, she would press the back of my hand twice — so I kept that hand where she could see it.
Mia's eyes changed, turning hazy.
"Mmmmm..."
The sound changed — from duty to pleasure. What she felt in her mouth was traveling down to her hips.
"Feels good?"
"Mmph... mm-hm..."
She nodded with her mouth still full. Eyes wet. Lips glistening around it.
That was enough. The first lesson Mia had set for herself ended here.
Nia's turn.
Mia slid aside, wiping her mouth. Her face was red — but her expression was one of satisfaction. The face of an adult who has just discovered one of her own tastes.
"Nia, come here."
Nia came over slowly and shed her nightgown. Slowly. One strap, then the other.
Black hair spilled down her back, catching the candlelight in a blue sheen. If Mia's silver hair was sunlight, Nia's black hair was moonlight.
"Lie down."
Nia lay back on the bed, black hair fanning out across the pillow. Violet eyes looked up at me. Trembling — but not running.
I settled between her legs.
"Today I'll make you feel even more than yesterday."
"...Okay."
I pushed in slowly. With last night in her memory, her body accepted me more easily this time. But she was still tight — Nia's body resisting all twenty-six centimeters. Yet inside the resistance, there was acceptance too.
"Mmm..."
Nia closed her eyes and bit her lip, holding in her sounds. So like her.
I didn't use the ability.
"Nia. You don't have to hold in your voice. And if you're still uncomfortable, I stop right now."
Nia lifted her face from the pillow.
"Don't stop. Instead... go slower."
I handed the pace back to the one who'd asked for it.
I lowered Nia's sensory threshold. An ordinary brain keeps a bar drawn across excessive pleasure — an evolutionary failsafe, since someone drowning in pleasure makes easy prey.
I unlatched that bar. Just slightly. Enough for Nia's brain to take in more.
I began the rhythm. A little deeper than yesterday. A little slower.
"Mmm...! Haah... ah..."
Nia's moans leaked out. Her hand rose to cover her mouth.
"Don't cover it."
"...It's embarrassing."
"It's not embarrassing. I'm the only one listening."
"...Sis can hear too, though."
Beside us, Mia snickered.
"I already heard it yesterday, so it doesn't bother me~"
"Sis!!"
Nia's cheeks detonated — and in that same instant I drove in deep.
"Aahh!!"
A sound came out. A sound she couldn't hold back. Nia's real voice.
"You just made a sound~"
Mia teased her.
"I d-didn't..."
"You did~ 'Aahh!' Just like that~"
"Sis, you're mean!! Mnn... ah..."
Mid-protest, I deepened the rhythm. Nia's complaint melted into a moan.
Contrast comedy from the twins. When Mia makes noise, she's proud of it; when Nia makes noise, her face burns scarlet. Same genes, exactly opposite thresholds of shame.
I changed the angle, watching Nia's reactions. Which angle drew the strongest response?
Angle matters more than depth. A woman's pleasure point sits three to five centimeters inside the entrance, along the front wall. The women of this world seemed built the same way — different race or not, the basic anatomy holds.
The strength of twenty-six centimeters isn't depth. It's control. With length, you can hit exactly the spot you want, at any angle.
I tilted the angle slightly upward.
"Aah...!!"
Nia's reaction transformed on the spot. Her back arched, her hands seized the sheets. Found it.
This was the angle.
Holding the rhythm, I worked the same spot over and over.
"Nnnh... ah, ah, what... what is this... more than yesterday... ah!!"
Nia's body began to shake. Goosebumps swept her whole skin; black hair rippled across the pillow. Her eyes lost their focus.
The ability stayed shut. Nia pulled my hips in with her own hands, setting the depth she wanted.
"Aaahh...!! Lord Do-hyun... this... this is too much..."
Nia's voice climbed higher. Nothing like her usual quiet tone — a sound rising from deep in her chest, one that couldn't be suppressed.
"Let me hear it."
"Ah... aahh...!! Nnngh..."
Nia made noise — for the first time, without holding back. Her moans rang through the room.
Mia's eyes went wide beside us.
"Nia... you are so loud..."
"Ah... no, I'm not... nnnh!!"
She denied it even as the sounds poured out. Beyond her will. Her body was simply responding.
The climax came surging — her second, deeper than yesterday's.
Fuck, it feels goddamn incredible.
"Aaaahhh...!!"
Nia's back bowed like a drawn bow. Both hands gripped the sheets hard enough to tear. Her legs went rigid. Her eyes rolled back, then found their way home.
Ten seconds. Fifteen. Twenty. A longer climax than yesterday's.
The effect of leaving the door of sensation open. When the brain's bar is unlatched, the waves of pleasure roll in longer and higher.
Her body went slack, melting into the bed, chest heaving for breath.
"...What was that..."
Nia murmured it, staring blankly at the ceiling.
"Worse than yesterday..."
"It'll be worse every time from now on."
"...Liar."
"It's true."
Fear and anticipation welled in Nia's eyes at once. I didn't judge which one won. She took my hand and drew it back toward her hips — and that act was her answer.
Debrief.
The three of us lay side by side on the bed — Mia on the right, Nia on the left.
"Mia."
"Yes?"
"How was the service?"
"It felt strange at first... but later it was kind of nice. Because you had this relaxed look on your face, Lord Do-hyun."
Mia's motivation: she takes her reward from her partner's reactions. The pleasure of making someone else happy — the classic service-oriented partner.
"Nia."
"...Yes."
"How was the penetration?"
"..."
Nia pulled the blanket up. To her nose.
"You don't have to answer. I can read your face."
Nia's ears were red — the ears showing above the blanket. That was her answer.
"Tomorrow I'll teach you even more."
"Tomorrow too?!"
Mia bolted upright.
"Anything systematic needs repetition."
"Yes! There's a next time!"
Mia lit up with excitement. Nia squirmed inside the blanket.
"Nia, you're not coming tomorrow?"
"...I am coming."
A small voice from inside the blanket.
"What was that? I can't heeear you~"
"I said I'm coming!!"
Nia flung the blanket down and shouted. Face red, eyes wet — wearing the look of someone who couldn't tell herself whether she was angry or embarrassed.
Mia laughed. I laughed. And in the end, Nia laughed too.
Before sleep.
Nestled against my chest, Mia asked:
"Lord Do-hyun, did I do well?"
"You did well."
"Really? My teeth didn't touch it?"
"...It touched once or twice. It's fine."
"Ah!! I'm sorry!! Tomorrow it won't touch at all, I promise!"
Fighting spirit blazed in Mia's eyes. Professional pride in her service. Remarkable.
Quietly, from the other side, Nia asked:
"...What about me?"
"Nia?"
"Did I... do well too?"
A small voice. A voice that wanted confirmation. Nia's self-esteem lives inward — sensitive to outside judgment. Someone who needs praise.
"You did well. Very well. The sounds you let out today — I liked them."
"...The sounds were embarrassing."
"They're not embarrassing. They're honest. You were being honest, Nia."
Nia buried her face in my shoulder. Damp. Crying again. This grown woman cries when she's happy.
Mia lifted her head from my chest.
"Nia, are you crying?"
"I'm not crying..."
"You are~"
"I said I'm not!!"
Nia thrashed under the blanket. Mia laughed. I laughed too.
A night shared by three. A narrow bed. The warmth of three bodies.
Mia's hand took my right hand. Nia's hand took my left. Both were warm.
"Lord Do-hyun."
"Lord Do-hyun."
They called at the same time.
"Teach us again tomorrow."
"...Tomorrow too. Please."
A bright voice and a small one. The same words, different volumes.
"All right. Tomorrow too."
They smiled at the same moment. I didn't need to see it to know — the grip on both my hands had tightened in unison.
I closed my eyes. Sleep was coming.
It was a good night.
...And the fact that I thought so frightened me a little. Though even that fear lasted only a moment.
The corridor.
I walked out of the maids' room, turning the day over in my mind.
Mia. Service is right for her — proactive, a fast learner. Her teeth still need watching, but show her a pleased expression and she pushes even harder. One word of praise changes her next move entirely.
Nia. Penetration. High sensitivity, with reactions that shift sharply depending on the angle. Touch the front wall just inside the entrance and she comes apart. She tries to hold her voice in, but past a certain line, the control fails. With the door of sensation opened, her climaxes ran longer and hit harder.
Same genes, different responses. Mia reacts more strongly to the pleasure of giving; Nia to the pleasure of receiving. The difference between an outward-turned nature and an inward-turned one shows itself just as plainly in bed.
As for my psychic ability — I never used it, not once, start to finish. Mia enjoyed herself more when she took the lead; Nia's anxiety thinned when she named the pace herself. Sharing a face does not mean sharing tastes.
We would continue tomorrow — but today's consent would not carry over automatically into tomorrow. I would ask again. If the word systematic is to mean anything, that confirmation has to come first, every single time.
I stepped out into the corridor.
At its end, a silver mirror caught my reflection.
I stopped walking — but the man in the mirror took one more step.
And then his face was erased.
Only a black-gloved hand remained, one finger raised to where the lips should have been.
Shh.
I blinked, and my ordinary face returned.
There were two moons.
And in the mirror, one shadow too many.