Aunt Yerin
"I masturbate thinking about you, Hyeonsu."
"What?"
The shock lasted only a second. The look on Ju-yeong's smiling face was unmistakably playful.
Was she joking?
"Aww~ I got you, didn't I? You actually believed me~"
But her expression turned serious just as fast.
"Hmm. Think I'm kidding? What would you do if I was serious?"
I could only open and close my mouth. Nothing came out. Not that I could exactly admit I jerked off thinking about her, either.
"Pfft. Hyeonsu. That flustered face is adorable."
"...Of course I'm flustered, when you say something like that. Ha... hah..."
I couldn't think of what to say next — and right then, the dryer chimed, a cheerful little jingle announcing it was done.
"Oh my. Looks like the laundry's finished. Give me a second."
She slipped out to the back balcony, pulled something from the dryer, and came back holding it. What she had in her hand was a pair of panties so small they could fit in her palm — barely a scrap of fabric, black mesh, impossibly sheer. She spread them out right in front of me.
"These are my favorite. I was going to wear them today, but I forgot I'd tossed them in the hamper. So I ran them through in a hurry."
Then, locking eyes with me, she put them on right there. She slipped one pale leg through, then the other, and slowly drew them up. As they climbed, her skirt lifted with them. Those long legs were laid completely bare, the thin black mesh sliding over taut, springy thighs, barely covering the cleft between them as they settled into place.
Holy shit...
The elastic snapped against her skin with a sharp tak, and the whole performance was over.
"I'm just the neighborhood auntie. No big deal, right? Hyeonsu?"
"Huh? Ah... yes... I mean... ha..."
I was broken. My mind went completely blank. The fact that I had just watched a married woman with a child pull on her panties in real time left me with a very strange feeling.
I sat there in a daze, sipping my tea again, making small talk. We even traded a few dirty jokes, each of us flashing a glimpse of our desire, if only for a moment.
Even after I got home, I couldn't get Ju-yeong's morning performance out of my head. The coarse pubic hair I'd felt at my fingertips. The sensual way she'd pulled those panties on. It was nothing like the other days, when we'd just traded dirty talk. Today had felt calculated — like she'd planned it.
I'd never seen her husband's face, but she'd told me he was no good in bed. Was that why she'd been so aggressive with me? If I'd lost my mind and jumped her back there... would she have let me? Or would she have told me to knock it off, that it was just a joke?
I sat at my desk trying to work, but the numbers and letters on the monitor just drifted through empty air. The more I thought about it, the more I felt myself swell, a bulge rising against my will.
Maybe I should just jerk off real quick?
If only Aunt Jisu were here right now...
My hand slipped into my pants before I knew it. I wrapped my fingers around my stiff cock and tipped the chair back, closing my eyes, picturing Ju-yeong.
But then, with absolutely no sense of timing, the doorbell rang.
Ding-dong.
Ugh. Who the hell was it at a time like this? Nobody was supposed to come over. Could it be Aunt Jisu? She'd been saying lately how much she loved having sex with me — but we'd already gone at it twice this morning. She still wanted more? Whatever. I was so horny I could barely stand it.
I got up and shuffled awkwardly into the living room, headed for the front door, and checked the intercom screen.
Huh?
It wasn't Aunt Jisu.
Aunt Yerin?
The second I unlocked the door, it burst open and Aunt Yerin came charging in.

"Hahh~ Son. Hold on, I'm desperate. I'm gonna piss myself."
She blew past me and bolted for the bathroom. She was Mom's friend, and she'd practically raised me when I was little — coming to my sports days, remembering my birthdays, and when Mom was busy, even coming over to put me to bed. That was why she sometimes called me Hyeonsu and sometimes called me son. She worked as a flight attendant, and her personality was the complete opposite of that pretty face — totally easygoing and unfiltered.
The distinctly feminine sound of her peeing leaked through the bathroom door. She'd clearly been holding it in, because it went on for a long time. A moment later the door opened and Aunt Yerin came out looking blissfully relieved.
"Hyeonsu, were you working?"
"Yeah. But what's with the surprise visit?"
"I came straight here after my flight. Oh, that."
She pointed at the suitcase she'd dumped by the front door in her rush to the bathroom, dragged it over, set it in the middle of the living room, and unzipped it wide open. Inside were the usual travel essentials — underwear, workout clothes, plus cosmetics and a hair dryer.
"I bought you this."
She pulled a shopping bag from a corner of the suitcase and handed it to me. Aunt Yerin's gifts were always good ones. This one probably would be too. Curious, I reached in and pulled out what was inside — a bottle of perfume that looked pretty expensive.
"You're old enough to wear this kind of thing now. It's like etiquette when you go out. Girls love this scent — try it. They'll be lining up behind you, I bet. Hehehe."
Aunt Yerin's smile was so pretty. The way she'd curled her long hair and pinned it up in the back suited her perfectly.
"Thanks, Auntie. Isn't this kind of expensive, though?"
"Oh, please. I can't even get my son something like this? Don't you dare feel guilty."
"Alright. Thanks. I'll put it to good use."
I spritzed a little on my wrist. It was subtle, the kind of scent you wanted to keep smelling.
"Oh, right. I'm gonna hop in the shower. I sweated so much I feel gross."
And with that, she peeled off her skirt and blouse right then and there. In a heartbeat, her body was on display — nothing but her underwear and nude-colored stockings. Not a hint of belly fat; a figure she clearly worked to maintain. The band of her pantyhose sat across hips that flared in a beautiful curve, and above that cinched waist, pale bare skin pulled my gaze like a magnet. Her breasts, with their deep cleavage, were straining against her bra.
She reached up and pulled out the pins holding her hair, setting them one by one on the coffee table. Once the last pin was out, her long natural hair spun free and cascaded down.
"Whew~ I was about to suffocate."
With her pretty waves swaying, Aunt Yerin walked naturally into Mom's room and came back with a T-shirt.
"Hyeonsu, I'm gonna shower."
"Yeah. Got it, Auntie."
She went back into the bathroom. We'd known each other since I was a kid, so she wandered around in her underwear in front of me without a second thought. She was that easygoing, and she thought of me as practically her own son — that was what made it possible. I'd been the same way.
But then...
After I'd started having sex with Aunt Jisu, something changed. I'd started sneaking glances at Aunt Yerin's chest, and more than once, while I was having sex with Aunt Jisu, I'd imagined it was Aunt Yerin underneath me. At first it felt guilty, but as it kept happening, that sense of transgression became an even bigger turn-on.
Transgression.
The final boss of sexual desire. There was a reason the top porn categories for men were friend's mom, older sister, little sister. Or mom. Or mother-in-law. That wasn't a coincidence.
I heard the water start running in the bathroom, and I started imagining Aunt Yerin in the shower. Back in elementary school, she'd wash me off when I came in from playing, covered in dirt. Now she'd become an object of desire. I pretended otherwise on the surface, but I couldn't help it. I was an adult now, too.
The cock that had gotten hard thinking about Ju-yeong still hadn't gone down. It was screaming inside my underwear. I went to the fridge, chugged a glass of cold water, and tried to calm myself down as much as I could.
A little later, the bathroom went quiet. The shower must have been over. Then the door cracked open and Aunt Yerin called for me.
"Hyeonsu."
"Yeah?"
"There's no towel in here. Can you bring me one?"
"Got it."
I grabbed a couple of towels and went to the bathroom door. Warm steam billowed out through the cracked opening, thick and white. I turned my head away for no real reason and shoved the towels through the gap. The door swung wide open and Aunt Yerin took them.
"Hehe. Are you getting shy, Hyeonsu? We've already seen everything of each other, haven't we?"
I'd gone to the public bathhouse with Mom until third grade. Aunt Jisu and Aunt Yerin had always come along, and I'd seen their bodies in full detail. I'd been so young it hadn't meant anything — it just felt like playing in the water, and I'd enjoyed it.
"Don't tease me. I'm an adult now, you know."
"Please. You're still a ten-year-old brat to me. Who do you think you're fooling, playing grown-up~? So cute. Hehehe."
The bathroom door shut again with a thud, Aunt Yerin's laughter still hanging in the air. My heart was pounding, and down below, what had started to go down slowly lifted its head again.
You sick bastard.
She's your aunt. Aunt Yerin. She might as well be another mom, in a way. And you're getting hard looking at her... With Aunt Jisu, things had just happened — there was no helping it. But with Aunt Yerin, I absolutely couldn't go there. I didn't want to create any more of these messed-up relationships.
The bathroom door opened and Aunt Yerin stepped out with a cloud of steam. She'd wrapped her hair up in a towel, piled high, and she was smiling like she felt completely refreshed. She'd put on the T-shirt she'd taken in with her, and her chest stood out even more than usual — the round shape of her breasts, nipples poking out sharply in front. She walked out of the bathroom like it was nothing.
"Hahh, Auntie. Put a bra on. I can see everything."
"Oh my. Really? So what. It's fine. You used to nurse on me when you were little... don't you remember?"
I remembered. The details were hazy, but whenever I'd been crying, she'd always soothed me, wrapping me up in a warm hug. And every time, she'd put a nipple in my mouth that didn't even produce milk. She'd never soothed a baby before, so everything she did was clumsy — she'd offered me her breast on the simple faith that that's how you quiet a child. I'd drift off like that, my hands on her soft breasts.
But I was twenty-two now. A grown man with dark hair sprouting everywhere.
"And why do you keep not putting on pants?"
"I will. But you're awfully naggy today, huh? So cute. Hehehe."
All Aunt Yerin had on was panties and a T-shirt. She'd always wandered around the house like this, but today it felt so much more sexual. While I worked, she sprawled on my bed looking at her phone — still no pants, still no bra, her nipples standing out clearly through the thin T-shirt. She hung around like that until evening, then headed home.