Massaging My Naughty Mom

The key I picked was a blunt black one.

"Son, this is your taste?"

"...Yes."

An engraved B sat beside a pair of wings spread wide like an angel's. A soft sheen caught the light across the entire key. It belonged to the high-end four-seater convertible Mom sometimes drove—a substantial Continental GT.

"Unexpected~ I figured kids your age would go for a sports car or something."

Mom tilted her head, then broke into a bright smile.

"If you ever want a different car, just say the word~"

"Yes, thank you."

Watching her head off to put the key back, I grinned like an idiot on the inside. The solid, luxurious weight still lingered at my fingertips. Honestly, I could have gone for something cheaper. There were plenty of BenX and BxW models lined up. But—

Heh heh. When it's free, why the hell would I pick that junk?

I never claimed to be a saint. Extreme benefit-chaser through and through. Up till now I'd put on an act, but at my core I wasn't a good person. My first car—gifted on ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠the very first day of my twentieth year! Just imagining myself cutting through the glittering city with a deep, throaty exhaust note already had my shoulders bouncing.

"Son, do you like it that much?"

"...Huh?"

"Nothing~ If my son is happy, Mom's happy too~"

Before I knew it she had settled beside me and gently wrapped her arms around me. Soft. The warmth of her chest pressed flush against my shoulder came through without a single barrier. I coughed awkwardly and gave her a light push.

"Mom, enough, enough. Lie down here for a bit. I'll give you a massage."

"Hmmph~~ Fine~"

She flopped onto her stomach right next to me without ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠a second thought.

Does she have zero caution or what?

Her ass rose up like it was about to burst. The moment that sensual body sank into the leather sofa with a heavy creak, the little guy down below screamed in pure delight. I quietly shoved my stiff cock sideways inside my briefs, then shuffled over on my knees beside her hips.

"Mom, just a second."

"Mm-hmm~! Whenever you're ready, go ahead~"

She glanced back at me completely defenseless, smiling bashfully. I quickly called up the system and checked the tutorial.

It's massage-related, so it should be fine to do it now, right?

A little uneasy, I tapped the hologram.

The instant the messages appeared, a tingling sensation raced through my entire body.

W-what the hell is this...?!

Goosebumps prickled and crawled. My vision sharpened a full tier, and every sense in my body felt as though it had transcended to the next level. It wasn't just talk.

Dad lived with a body like this...?

The change was terrifyingly immense. Every single fine hair on my skin stood out in perfect clarity. My senses had grown so hypersensitive that even a passing breeze sent a chill through me. Betrayal surged up. He'd been hoarding something this good all to himself!

I shuddered for a while under the aftershocks, then hastily lowered my gaze to Mom's body.

Whoa... what is this?

Underneath the clothes she was wearing, mottled spots began to appear in staggering numbers. Multicolored points blanketed her entire body. Somehow I understood exactly what those spots meant without anyone telling me.

Black means... a bad spot. Blue is a place that feels good when pressed. Red is......

Gulp. Erogenous zones. Staring at those blatantly placed locations, I swallowed hard and carefully raised my hands.

"Son~ starting now?"

"Uh... yeah."

"Mm~ take good care of me~?"

"Y-yes..."

Mom closed her eyes and surrendered her body completely. What kind of reaction would I get if I pressed one of those red spots right now...?

No! You crazy bastard. Do an actual massage first.

I was dying of curiosity, but luckily I still recognized this was a tutorial. Snapping back to my senses, I first set my hands on a black spot and pressed hard.

"Ugh..?!"

"A-are you okay?"

"Nn.. kuhh.. yeah.. I'm finee.."

Mom flinched hard, face twisting in pain. It was a black spot nestled between the erector spinae muscles just above her pelvis.

What? Does it hurt that much...?

I pulled my hands away and thought for a second. The answer came immediately.

Because I'm using Dad's abilities at full power right now?

It had looked pretty bad, so I'd pressed with everything I had—that must have been the problem. Looking at Mom's body locked stiff with tension, I spoke carefully.

"I-I'll try again, okay? Just bear with it a little. It's a really bad spot."

"Y-yeah.. okay, son. Don't worry about Mom, just do it.."

This time I eased off the force as much as possible and rubbed the core of the erector spinae in gentle circles.

Press, press, press.

"Kuhh.. nnn... kuhh.. sooon..."

Her body squirmed every time my hands made contact. From her expression the pain was still there, but it looked better than the first time. I kept massaging gently for a while, the way you'd give a puppy a scalp massage.

"Haa.. hoo.. haah.."

Then, little by little, the black spots began to fade. With each deep breath Mom's face grew visibly lighter.

Guess it feels good...

Even so it was still hard work; fine beads of sweat were forming on her pale skin. After wiping out every last black spot spread between the long muscles running up from her hips, I swept my eyes around looking for any leftovers—and froze.

...Those spots are a little much, aren't they?

The only remaining areas were places a son had no business touching. Her pussy, and her breasts.

...I really can't do those, right? They're even mixed with red...

I hesitated, worried she'd misunderstand if I pressed them. But in that moment, at least, my intentions were pure. After fretting, I lightly kneaded her slender arm where blue light shimmered and casually asked,

"Mom...? Your lower back seems better now. How does it feel?"

"Mmmnn.. so, so good.. It feels amazing, son. I wish you'd do this for me every single day..."

Mom looked up at me with honey-dripping eyes full of affection.

Haa...

Self-loathing crashed over me like a wave. Getting hard while looking at someone like that. I crushed the filthy desire as hard as I could, pulled my hands away, and opened my mouth. This was the woman who had raised me unconditionally for three years. A human being ought to keep at least the minimum decency.

"Mom. For now... I think I've taken care of the urgent parts. I don't think I can do the rest, so maybe get a professional to look at them later."

"Haa... hmm? Why?"

Mom tilted her head back and stared at me, completely baffled. That pure curiosity stabbed my conscience. Which was ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠exactly why I had to say it.

"W-well, with the clothes you're wearing right now, and also... wouldn't it be a little embarrassing to have me do the remaining areas...? And I only just started this massage job..."

It was the best consideration I could offer. I said it while practically coughing up blood. Of course I wanted to touch an actress. She was my ideal type, and the forbidden step-family thrill was piled on top of that. But Mom casually kicked my consideration straight out the window.

"Mmm..? What are you talking about~ Out of every massage I've ever gotten, this was the best by far.. Ah, come to think of it, your skill feels exactly like your dad's?! Your father was seriously amazing at massages~."

Mom grinned and sat up from the sofa. She rolled her neck a few times, then looked at me.

"Son, wait right there~? Mom's going to change clothes real quick."

I could only watch with open eyes as she walked away across the marble floor of the penthouse.

...You're the one who seduced me.

I was past my limit. My cock was already straining so hard it looked ready to punch through my pants. For a while I sat there in the empty living room, fiddling with the massive dick that lived up to the name Gwi Dunam, soaking in the silence.

"Son~!"

Mom's voice floated over from a distance. It was soft enough that she must have been calling from a room. I tucked my cock sideways into my briefs again and got up, shuffling toward the sound. At last I stood in front of the bedroom door.

"...Mom?"

"Ah, son~ Perfect timing. I still had this~ It's the one Dad used to use..."

Mom was smiling brightly, holding a large bottle of oil. The kind of face that looked like it belonged on television. But that wasn't the problem. Inside a luxurious room I had never once set foot in before, Mom had laid several towels across the bed and was wearing nothing but ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠a single sheer negligee you could see straight through.

She's lost her mind.

"M-... hah. Mom, the way you're dressed is a little..."

"Mmm? Ah~ this?? If oil gets on regular clothes you have to throw them out~ And for a proper massage this is better, right?"

I stood there blankly staring at her. From her expression, she was completely serious. And she wasn't wrong. Oil was a pain in the ass to get out. When Dad did massages, clients either got stripped naked, wrapped in towels, or took everything off themselves. The problem was that this was my mom.

"Alright... well, I'll do my best."

"Mm-hmm~~!"

Whatever. The tutorial buff was still active. I had no idea when it would end, but until then I would give it everything I had. Eyes locked on the red spots glowing across Mom's body, I drifted toward the bed like a cat chasing a laser pointer. The only black spots left were on her pussy and breasts. Mom smiled and lay down on the towels she had spread out.

"Son, is this position okay? Have you used oil before?"

"Uh.. it's my first time. But I watched Dad a few times. I'll give it a shot."

"Okay~ Mom can look forward to it, right?"

"Yes. Ah—what about the sisters?"

"Hmm? What time is it~? They're both still out, I think? Why~?"

"Ah.. nothing. Okay, lie down properly."

Having gathered every piece of information I needed, I decided that if I was going to refuse I should have done it earlier, and quickly took my place. The shirt and slacks I was wearing felt ridiculously restrictive, but I said screw it and ignored them. I rolled the sleeves up to my wrists, then poured a generous amount of oil into my palm.

Squelch, squelch.

Every time I worked my hands the sticky viscosity stretched and smeared.

"Mom, starting now?"

"Mm~!"

And just like that, I laid my hands on Mom's body for the first time.