His Arm as a Pillow
Just as I was about to close the door and leave, Mom called me back.
"Hyeonsu, want to sleep with Mom tonight? It's been a while."
"Huh? You haven't gone to sleep yet?"
"I just can't seem to fall asleep. I think I'd drift right off if my son patted me a little."
There used to be nights when I'd sleep beside her. Whenever I laid my head on her arm, the warmth was so strangely, wonderfully cozy that I'd sleep through until morning without waking even once. Looking back now, her face on those nights always seemed a little lonely. Maybe that was why.
But after I became an adult, it almost never happened. Except for the rare night of fierce wind and rain, or after watching a scary movie, we slept in our own rooms.
Today, though, something about Mom's expression looked lonely. The sight of her at thirty-eight, still working so hard to raise me on her own, struck me as somehow pitiable.
"Alright. Let me go put on some pajamas."
I usually slept in just my underwear, and right now I wasn't wearing anything but my briefs.
"It's fine. We can just sleep with your bare skin against mine. Come here, Hyeonsu. Hurry."
Mom lifted the blanket a little, making space beside her.
Even if she was my mom, I hesitated a little, being in nothing but my underwear.
"You sure?"
"Yeah. Mom likes it. Come on in."
Ah, whatever. I didn't even know where my pajamas were, and Mom was telling me to come in. I climbed onto the bed as I was and slipped under the blanket she held open for me.
The space beneath the covers was filled with Mom's scent. A warm, sweet fragrance brushed pleasantly against my nose.
"Want to be Mom's pillow tonight?"
"Me? Sure. Come here, Mom."
I slid my arm beneath her neck as she lay on her pillow.

Mom turned toward me and nestled comfortably against my chest.
"Mmm. My son's skin. Hehehe."
"Hey. I didn't even shower."
"I love my son's smell. Even without a shower."
"I actually did shower."
"Hehe. I know. You smell sweet."
She buried her head even deeper. I wrapped my arm around her and pulled her in tight, circling her body with my other arm and drawing her against me. There wasn't even the smallest gap between us.
"Mom. Are you warm?"
"Yeah~ Being in my son's arms. It's so cozy. When did you get so big you could hold Mom like this..."
Her breath warmed my chest. We didn't allow even a millimeter of space, exchanging body heat and the sound of each other's hearts. I gently stroked the back of her head. The silky feel of her hair was nice. Even the shape of her head was pretty — my mom.
And then I realized. Mom was in her underwear too.
The moment I understood that, my face burned hot. She was wearing a bra and panties, but the constant press of her bare skin against mine made my body go rigid. Her breasts kept pushing into me. Even through the bra, I could feel how soft they were.
A fully grown son and a mother in the prime of her thirty-eight years, lying in bed in nothing but their underwear, holding each other tight. Anyone looking at this would know it wasn't a normal situation.
"Son, why is your heart beating so fast?"
Mom asked, her face buried in my chest. I couldn't bring myself to say it was because of her.
"Uh... just. I think it's because I climbed into bed so suddenly."
Even as I said it, I knew it was a ridiculous excuse. But no other excuse came to mind.
"Mmm. I think I'll sleep well tonight. With my son holding me like this."
"Hey. You should know how lucky you are to have a son like me. Where else would you find a son this devoted?"
"Of course. My son's a good boy. Hehehe."
Mom wrapped her arms around me too, nestling even closer. Up to this point, it was fine. It was fine, except—
"Oh my."
"...Huh? What?"
"Uh... down there..."
Oh no.
I'd gotten hard without realizing it. And I'd kept pulling Mom against me without knowing. Where had I poked her? Somewhere below her navel, I was pretty sure...
"Ah! Sorry, Mom. That's... that's, uh..."
"...It's okay. At your age, that can happen..."
Her voice was calm, but a tremor of fluster ran through it.
"Uh... it's not because of you, Mom. I just... I was thinking about something else earlier..."
God. Listen to me making excuses. The words came out of my own mouth, but I had no idea what I was even saying.
"I know... it's okay, son."
Then, silence. Neither of us said a word. There was nothing else we could do but stay like this, clinging to each other. We were both embarrassed. I awkwardly pulled my hips back a little.
My heart was pounding like it might burst. The heartbeat I felt through my palm — Mom's — was the same. The room was swallowed in silence. The only sound was our breathing. Even the rustle of the blanket had gone still.
A few minutes passed like that. Finally, Mom broke the silence.
"It's okay, son. Don't worry about it. So just... stay close, like before."
She pressed her hips even more firmly against my body.
The tip of my cock pressed into her again, somewhere below her navel. But Mom didn't startle this time. She just pressed herself even closer, as if that were simply how things were.
She had come deep into my embrace. Her face was against my chest, and I could feel every hot breath she took. Her smooth legs overlapped with mine, our hips pressed together.
I wanted to look away from this situation, but there was nowhere to run. I tried reciting the national anthem, but it did absolutely nothing to calm my cock. All I could do was stay still, just like this.
"Nnh."
Mom trembled now and then, for reasons I couldn't name. Each time, her whole body went taut, and a soft, obscene little sound slipped past her lips.
This was a first for us. In the old days, I'd rest my head on her arm and we'd talk about all the fun things that had happened that day, or whatever was trending lately. But today, we said nothing. We just lay still, feeling each other's racing hearts. Maybe it was because my cock had gotten hard...
Early the next morning, as Bora swept the salon, a strange feeling kept washing over her, and she couldn't do it properly. Breakfast had been awkward too. She couldn't look her son in the eye, and she'd finished her meal without even knowing where the food was going.
Last night. When she'd called Hyeonsu in after he'd opened her door, asking him to be her pillow — in that moment, the thought had struck her that her boy was a man. The solid arm she'd felt under her head. And that faint smell of semen drifting from somewhere. She suspected he'd come from masturbating. It kept wafting up every time the blanket shifted.
The moment that smell hit her, a strange sensation had run through her whole body. Was it because she'd been craving a man so badly lately? Without meaning to, her inner thighs had gone taut.
She'd tried to think of something else with her face buried in her son's chest, but his cock kept pressing against her hips. Had it gotten hard because of her? The thought had made the strength drain from her entire body.
That maddening sensation, still there even as they held each other. She'd tried to ignore it, but without meaning to, she'd clenched her pussy. Her body had trembled, and a small wave of pleasure had crashed through her.
Herself, feeling that while held in her son's arms. She hadn't let it show, but a thrilling climax had found her in that embrace. How many times she'd felt it, all the way until dawn. This morning, changing her panties, the shame she felt had been equal to the wetness she found there.
Even in the shower, slick juices had kept leaking from her. The guilt had been overwhelming. She'd been unable to push Hyeonsu away, and she'd spent the whole night feeling that. She wouldn't see other men because of her son — and yet here she was feeling this toward her son. It was mortifying.
Watching Bora sweep in a daze, Jisu asked from beside her.
"Bora, what's with you today?"
But Bora just kept sweeping the same spot, staring off into space.
"Bora?"
It wasn't until Jisu grabbed her arm and shook her that she snapped back.
"Huh. Yeah? What?"
"I mean, maybe sweep somewhere else? You've been on that same spot for ten minutes."
"Have I? Sorry."
Bora put on an awkward smile and moved to another area, pretending nothing was wrong. Jisu watched her go, tilting her head.
Whether it was fortunate or not, there were almost no customers that morning. Bora spent the entire morning turning over a worry she couldn't resolve.
"Bora."
"Yeah?"
"Is something going on? You're so quiet today."
"No. It's nothing."
Jisu's voice from beside her sounded muffled, like it was coming through water.
Even at lunch, she reached for the same side dish three times in a row without noticing. Her head was full of the smell of semen and her son's cock poking into her belly. And still, strange fantasies kept rising, and she kept shaking her head to drive them off.
"Bora. There aren't many customers today anyway — mind if I take care of something this afternoon?"
"Huh? Something?"
"Yeah. My body's been feeling off lately, so I wanted to go to the hospital. I think I might need to get some medicine."
"Okay."
"Really?"
Normally, Bora would have said absolutely not — they had work to do. Jisu checked with her one more time.
"Alright then. I'm going to eat and then go take care of it?"
"Yeah."
"No changing your mind later, okay?"
"Yeah."
The truth was, Bora had said it without thinking at all. Whether there would be customers in the afternoon, whether Jisu was leaving early — none of it interested her. The only thing filling her head was last night.