All It Took Was One Night
Let's rewind the clock for a moment—three hours earlier.
Dalia, fresh off her shift, collected me from the break room and led me out of the guild building. She stocked up on groceries, snacks, and daily necessities at the shops, then stopped by a clothing store to buy me several new outfits that actually fit. The price tags looked steep enough that when I asked about it, she shut me down with a single line: "That, my dear, is what they call the luxury of being a grown-up."
Well, to be fair, anyone working staff at the Adventurer's Guild probably pulled in a decent living. Faced with the purchasing power of a real adult, my pride as a man dissolved into baby babble, and I was too busy bowing over and over in thanks to worry about it.
Eventually, a few bottles of alcohol became her final purchase, and with that, our shopping trip came to an end.
Dalia was far more well-connected than I'd expected. The whole time we wandered the streets, people kept stopping to trade warm greetings with her or chat for a few words. Well, she was that beautiful—in a word, the kind of woman who earned goodwill wherever she went. Though her own friendliness played no small part in it either.
Dalia's house was equally ordinary. The exact kind of place you'd picture a woman her age living alone in, you know? Tasteful little decorations on the walls, and a pillow that was... some kind of cute cat character?
"Sorry about the mess. I didn't exactly expect to be taking in a guest on such short notice."
"It's fine, noona. The clothes and everything else too... thank you so much for putting me up tonight."
"Oh, come on~ no need for all that now."
Having tidied away her purchases in short order, she soon went off to change. In the meantime, I let my eyes wander around Dalia's room.
...Aside from the fine details, decorating a room here really isn't so different from my old world. And here I thought it'd be wildly different.
The candle-and-lamp lighting, the fixtures hanging from the ceiling, the look of the floor and the wallpaper—those were all fairly alien, granted. If anything particularly caught my eye, it was the bookshelf, tall enough to touch the ceiling. Well, with no smartphones or computers in this world, books were about the only indoor entertainment worth the name.
A jolt—
...Anyway.
Seriously, what is this sensation? It's been nagging at me since earlier.
I'd felt it faintly ever since strolling the streets with Dalia, but it had been subtle enough to ignore. Ever since stepping into her room, though, that inexplicable feeling seemed to be growing stronger. My vision was going a little hazy, and every so often my consciousness would blur for a heartbeat... something like that.
Ugh... what is this. Did I catch a cold or something?
"Um... hey... Riol?"
Dalia was looking for me. I didn't know the layout of the house, but... I could make a fair guess that the room her voice came from was the washroom.
"Wasn't it a little hot today?"
"Huh? Oh, I guess so?"
"Mm, noona's been sweating an awful lot today for some reason... I suppose you were fine, huh."
Just as I was wondering why she'd bring that up out of nowhere—
Click—
The door swung open. As expected, the room was indeed the washroom. I mean, steam from the boiling water had filled it to the brim.
"Would you... like to bathe with me?"
Because Dalia, at that very moment, wore nothing but a single towel—not another stitch of clothing on her body.
"Phew... I feel alive again..."
"..."
The water was warm. A feeling like every trace of fatigue melting away wrapped around my whole body. The problem was that Dalia and I were sitting pressed skin to skin, completely naked, in an impossibly cramped tub. She'd gotten in first, and I sat between her legs with my knees drawn up—which meant the heavy presence of her chest pressing against my back was seriously getting in the way of my concentration.
"Your back... it's so hard."
Stroke—
Dalia suddenly glided her palm softly down my spine. A shiver ran through me, and a strange noise escaped before I could stop it.
"Hngh—?!"
"Pffhah—! What was that noise just now?!"
"Ah, noona... seriously."
"Sorry, sorry."
When I twisted around to shoot her a glare, I found her face flushed red as a beet. Far too flushed to blame on the bath's heat. She was clearly embarrassed.
"Mmm... more of a man's build... than I expected..."
"Noona?"
"Huh? N-nothing... forget I said that."
Her hands fluttered about restlessly, as if they had nowhere to belong. The tub was a touch too cramped to just leave her arms hanging at her sides, so after a moment of hesitation—
she wrapped both hands around my waist.
The stimulation had been no joke for a while now. Maybe because my past life had come with so little experience with women, my cock was slowly announcing its presence without a shred of tact. Praying desperately that Dalia wouldn't notice, I held my body stiff to keep it out of her line of sight as best I could.
But then...
"Hey, Riol."
"Yes?"
"Just... asking in case, but do you wear cologne?"
"Cologne? What's that about?"
"Right? S-sorry. Now that I think about it, you're hardly in any position to be spritzing cologne."
There was a faint wetness clinging to Dalia's voice. An inexplicable sense of wrongness seemed to crawl up my spine.
A jolt—
Ah, fuck. It's happening again...
That feeling. And right now it hit harder than ever. My head grew hazy, and an unknown euphoria began to well up inside me.
Why is this happening...? Dalia's scent in particular... it's like it's driving straight up into my brain...
Just as the sensation kept swelling, Dalia ran her hands down my waist, under my arms, along my back, over and over, caressing the muscle—and then she spoke. My cock, past its limit, stood rigid and twitching, and my pupils were slowly melting out of focus.
I can't... hold back anymore...
"Hehe... you know, I've thought more than once about how nice it'd be to have a little brother."
"...You wished I were your little brother?"
"I did. I begged my parents for one plenty of times, you know? Though... once I figured out what I'd actually been asking for, it got a little embarrassing."
"What do you mean by that?"
"Huh? Ah... sorry! That's a little early for you, Riol..."
"No, it isn't."
Slosh—
I turned around. Ending up face to face with Dalia. Lush breasts I'd never even seen in porn. Not a hint of sag, holding their shape in a way that could only be called greedy. Her belly had a little softness to it too—cute levels of it, though. No wonder she'd only picked out the sweetest snacks earlier; her diet clearly wasn't the healthiest.
"R-Riol...?"
"Dalia..."
"Y-you're... kind of scaring me? Hehe... a-anyway, you suddenly switched to c-casual talk... Mmph—?!"
I sealed her mouth with mine. Something in my skull was screaming at the top of its voice: Devour that supreme female.
"Mwah—♥ nnghh♥ s-stop♥ mmphh♥"
I slipped my tongue in and stirred it through her mouth. I'd never kissed like this before. With pleasure fogging up my brain in real time, Dalia's scent pierced through my nose and scrambled my mind.
"Mmph♥ mmwah♥ hahh♥ R-Riol...♥"
Squish—
My hand had found its way to her chest before I knew it. However I kneaded, the shape gave softly under my fingers and swayed with a heavy weight.
"I hate iit♥ Riol, stop♥ stoop iit♥"
"Who's the, hah... little brother here..."
"Nnghh♥ let's t-talk, let's talk about thiiis♥ noona's s-sorry...♥"
"You're the one... who seduced me, hah. You know that, don't you...?"
I pressed my lips to her throat and sucked, hard. Sucking at her water-slicked flesh, obscenely lewd sounds quickly filled the bathroom. Soon I worked my way down to her collarbone and the swell of her chest, carving marks into her as I went—biting down with my teeth, too. My other hand never stopped kneading and indulging in her breast.
"Ahh♥ nnghh...♥"
"Hah, Dalia..."
"Ah...♥ I can't♥ I'm, your noona...♥"
"With a pathetic little pussy like this, what exactly makes you a noona..."
Squelch—♥
"Hyaah—?!♥ ah♥ noo, not theere♥"
Squelch— squelch— squelch— squelch—
Splash— splash— splash— splash—
Under the water, I rubbed her pussy hard with my hand. Every time my fingers flicked her swollen clit, Dalia's body jolted violently. She shrieked at every spot I touched, thrashing hard enough to slosh water over the rim of the tub. There was nothing left holding me back. I slipped my fingers inside her and searched out her weak spot, teasing it.
"Oh?! nnghh♥ this, I hate... hate iit♥ make it stop♥ nnghh—♥"
"Ah... found it. Your weak spot."
I pressed down hard on that unusually sensitive spot with my fingers. My other hand pushed firmly against her lower belly, right where her womb would be. In an instant, Dalia was caught in an extreme portio climax and spouted a fountain. Being underwater... you couldn't tell, but still.
Jolt— jolt—
"Nngh♥ ohhh♥ nghh♥"
"Such vulgar moans... so fucking hot."
What is this? This is the worst. Dalia, tears streaming, climaxing with an utterly wrecked expression on her face—she looked so, so beautiful. So cute. My sadistic urges were surging.
"Dalia."
"Y-yes...♥"
I took the arm of her boneless body and pulled her up. Whether I'd grown stronger through reincarnation or she was simply light, guiding Dalia's body to the bedroom was easy. We went just like that—without drying off, without a thought to the mess we left behind in the bathroom. Even as the suds and bathwater clinging to our skin stained the floorboards and the bed sheets, Dalia was still drowning in the afterglow, powerless to stop any of it.
I laid Dalia down on the bed, half-tossing her. Then, with no foreplay needed, I aimed my aching, burning cock at the entrance of her pussy.
"Hah... Dalia. You a virgin?"
"Yes... yees...♥ I'm a virgin...♥"
"Dalia... you seduced me first, so this is your fault. Got it? Beg for my cock."
"Yesss...♥ my 2...23-year-old virgin pussy... please punish it good and hard with Riol's cock...♥"
"Perfect. Here I come...!"
Thrust—♥
My massive cock pierced straight through to her womb in a single stroke. Swallowing me to the root, Dalia threw her head back, clawed the sheets with both hands, and came all over again.
Squirt— squirt— splash—
Jolt— jolt—
"I'm moving."
"Ohhh♥ nngh♥"
"Feels good, Dalia?"
"I love it♥ I love iit♥ more♥ do me more, please♥ aahh♥"
Slam— slam— slam— slam— slam— slam— slam—
This feeling... what is it?
It wasn't just Dalia gasping under the pleasure. I was in danger too. I had never once felt a sensation like this, not in either of my lives.
"Ngh... Dalia...!"
"Ah♥ I love this♥ nngh♥ moree♥"
Is this what doing drugs feels like? I felt so good my vision was blurring at the edges.

Vmmm—
"...Huh?"
Mid-stroke, hammering deep against her womb, something appeared on her lower belly. Glowing a vivid pink, it was...
A womb tattoo...?
"Ohh, ohhh—?!♥ wh-what is this...♥ R... Riol?!♥ I hate it♥ I don't know anything about thiss♥"
Squirt— splash— splasssh—
The moment Dalia's womb tattoo lit up, she came with her eyes blown wide, moaning in a vulgar voice without a shred of dignity left. Seeing her like that, I felt my cock harden even further.
Slam—♥ slam—♥ slam—♥
Creak— creak— creak— creak—
Around the time I was pounding her virgin pussy so relentlessly she seemed on the verge of losing her mind, my own release began to close in. Through every thrust, she and I were both melting in the greatest, most indescribable pleasure of our lives. At some point all conversation had ceased; nothing remained but moans. In that room gone hazy with the heat of our sex, we mated like beasts, utterly indifferent to whether the neighbors could hear—lost in nothing but the act itself.
Before long—
Spurt— spuuurt—♥
Throb— throb— throbb—♥
With no protection of any kind, my semen came crashing into her womb. There was so much of it that even stuffed to the brim, it pulsed and leaked back out of her pussy. And in that moment—watching Dalia, completely broken and trembling as she climaxed—without a single word of explanation from anyone, I understood instinctively.
Reincarnated into another world out of nowhere. Barely a day since I'd first met Dalia. And in just one night—I had become Dalia's master.