Collar My Heart
Copyright© 2026 by Megumi Kashuahara
Chapter 25: The Dungeon
Romantic Sex Story: Chapter 25: The Dungeon - The Completion of C.Stanton Leman's delicious D/s tale. A wealthy Japanese businessman, and an accomplished Dom and Master, is confronted with the problem of introducing his submissive daughter to the scene and helping a dear, trusted friend he's mentored find a new sub. He offers his daughter. But, it comes with a price
Caution: This Romantic Sex Story contains strong sexual content, including Fa/Fa Consensual Romantic DomSub MaleDom Light Bond Spanking Interracial White Male Oriental Female Anal Sex Analingus First Oral Sex Petting Pregnancy Sex Toys Squirting Small Breasts AI Generated
MIOKO
It had been three weeks since Kioko’s Rose Ceremony, and life had settled into a comfortable rhythm.
Well, “comfortable” might be the wrong word.
More like “deliciously chaotic.”
Kioko and I had discovered that we made an excellent team when it came to pushing Daniel-san’s buttons. She’d always been more reserved, more obedient, but lately she’d been taking pages from my playbook.
I’ve created a monster. A beautiful, bratty monster.
Today, we’d taken things a bit too far.
Daniel-san had gone to work early for an important meeting, and Kioko and I had been left alone in the apartment.
One thing led to another.
A kiss turned into touching.
Touching turned into more.
And before we knew it, we were in bed together, pleasuring each other, getting lost in the moment.
His bed. We’re in his bed. Using his pussy without permission. We are so dead.
But it had felt so good, so right, that we couldn’t stop.
By the time we’d both cum – multiple times – the bedroom smelled distinctly of sex.
“We should probably shower,” Kioko said, still catching her breath.
“And maybe Febreze the entire room.”
“And burn the sheets.”
“And possibly flee the country.”
We giggled nervously and headed to the shower.
But we didn’t move fast enough.
DANIEL
My meeting had ended earlier than expected, which meant I got home around 3 PM instead of 6.
The moment I walked into the apartment, I knew.
The bedroom door was open, and the unmistakable scent of sex hung in the air.
Oh, they didn’t.
I walked to the bedroom and looked around. Rumpled sheets. Damp spots. The scent even stronger in here.
Oh, they absolutely did.
I heard the shower running in the master bathroom.
Both of them. Together. Using my property without permission.
I smiled.
Perfect.
I walked back to the living room and called out loudly, “Mioko! Kioko! Front and center!”
I heard scrambling from the bathroom, whispered panic, then both women appeared in the living room wearing only bathrobes, hair still wet.
They looked guilty as hell.
“Yes, Master?” they said in unison, trying to look innocent.
I positioned myself in the center of the living room.
“Come here. Both of you.”
They shuffled forward nervously – Mioko on my left, Kioko on my right.
Kioko was a half-step closer, so I turned to her first and leaned in, sniffing her face.
She froze.
Then I turned and sniffed Mioko’s face.
Also frozen.
I positioned myself between them and reached down, cupping Kioko’s pussy through her robe.
She let out a startled “Eek!”
I looked her dead in the eye. No anger. Just feigned annoyance and barely suppressed amusement.
“Whose pussy is this?” I asked, giving her a gentle squeeze.
Kioko lowered her head and smiled coyly. “It’s your pussy, Master.”
I turned to Mioko and gave her little mound a squeeze through her robe.
“And whose pussy is this?”
She knew what was coming. She could barely contain her grin.
“It’s your pussy, Master ... but I borrowed it.”
I still had Kioko’s pussy well in hand when she couldn’t help herself and giggled.
I gave her the evil eye. “What’s so fucking funny?”
“Sorry, Master, but I lent your pussy out also. I-I—”
“SHUT UP! What the fuck were you two doing with MY pussy?!”
Mioko snickered and looked at Kioko, expecting her to confess.
But Kioko seemed to take a bratty page from Mioko’s book and replied innocently, “Brunch?”
Mioko lost it and burst out laughing.
I nodded, trying not to smile. “Into the dungeon. Both of you. Now.”
Kioko’s eyes went wide. “The ... the dungeon?”
She doesn’t know about it yet. Perfect.
Mioko did a crisp about-face and exclaimed, “Goody, goody, goody!”
KIOKO
Dungeon? What dungeon? We have a DUNGEON?
I followed Mioko and Master Daniel down the hallway to what I’d always assumed was just a storage room.
Master Daniel unlocked the door and flipped on the lights.
My jaw dropped.
It looked like an actual medieval dungeon – faux stone and mortar walls with rings mounted at strategic points, a spanking bench, what looked like a medical examination table, a St. Andrew’s cross, an electric winch hanging from the ceiling, shelves lined with implements.
Floggers. Crops. Paddles. Canes. Chains. Restraints. Clamps.
Holy shit.
“You ... you built this?” I breathed.
“I’ve been working on it for the past month,” Master Daniel said. “I was waiting for the right time to introduce you to it. Congratulations, you two just earned yourselves the grand opening.”
Mioko was practically vibrating with excitement beside me.
She’s been waiting for this. She loves this stuff.
“Which one of you pussy-stealing bitches wants to go first?” Master Daniel asked.
Mioko and I pointed at each other simultaneously.
“You!”
“No, you!”
Master Daniel looked at me directly, his expression softening slightly.
“Kioko, sweetheart, do you trust that I won’t hurt or abuse you?”
I looked around the room – at all the intimidating equipment, the chains, the implements designed to cause pain.
Then I looked at him.
At the man who’d healed me. Protected me. Shown me that intimacy could be safe and beautiful.
“I trust you, Master. I believe that you won’t hurt me.”
He smiled. “Good. Because you’re both going to be punished for playing with my property without permission. But I promise you – this will be intense, but safe. Challenging, but not traumatic. Do you understand?”
“Hai, Master.”
“And you, Princess?” he turned to Mioko. “You knew better than to play without asking first.”
She tried to look contrite but failed miserably. “Hai, Master. I knew better. But it was so much fun—”
“Silence.”
Her mouth snapped shut, but I could see the excitement dancing in her eyes.
She’s been waiting for this. She wants this.
“Mioko, since you’re clearly so eager, you’ll go first.”
DANIEL
I had Mioko remove her robe first.
She stood before me completely naked, hairless, her collar gleaming at her throat.
“Over here.”
I led her to the electric winch setup I’d installed. Two spreader bars – one for arms, one for legs.
I secured her wrists to the arm spreader, then her ankles to the leg spreader, positioning her in a perfect “V” shape.
“Master?” she asked, excitement and nervousness mixing in her voice.
“Trust me, Princess.”
I activated the winch, and slowly, both spreader bars lifted off the ground.
Mioko rose into the air, suspended in a perfect spread-eagle position, her pussy level with my cock.
“Oh YES!” she squealed.
That’s my girl. Always so enthusiastic.
I walked over to the wall and selected a ball gag.
“This should quiet you down some.”
I stuffed it into her mouth and secured it behind her head.
She made a muffled sound of protest, but her eyes were shining with excitement.
I grabbed a ping pong paddle and returned to my little slut asked, “Are we having fun yet, slut?
“Yeahhhggg Maaaggsther.”
I chuckled and replied, “well, let’s warm up this party a little...”
WHAP! WHAP! WHAP! WHAP! WHAP! WHAP!
I gave her three good swats on each butt cheek. She was a rosy pink and nice and warm.
I turned to Kioko, who was watching with wide eyes, and gave her what I hoped was a sufficiently evil grin.
“Your turn, Little One.”
KIOKO
Master Daniel took my hand and led me to what looked like a gynecological examination table.
Oh god. Oh god, this isn’t happening!
He had me remove my robe, then helped me onto the table, positioning me so my bottom hung over the edge.
He lifted my legs into stirrups – padded, adjustable, spreading me wide open.
Then he secured padded cuffs around my ankles, locking them in place.
I can’t close my legs. I’m completely exposed.
He moved to my wrists, securing them in padded cuffs attached to posts over my head, stretching my arms out and back.
I was completely helpless. Completely vulnerable.
“Are you okay?” he asked gently. “You’re breathing pretty heavily.”
“I’m fine ... I think. Just a little frightened.”
“Remember your safe word. Red stops everything immediately. Yellow slows down. Green means keep going. What’s your color right now?”
I took a breath. “Green, Master. I’m green.”
“Good girl.”
He stepped back and began removing his clothes.
When his cock sprang free – fully erect, intimidating, ready – I felt a flutter of nervousness and arousal.
He’s going to fuck us both. Right here. Right now.
“Remember, sweetheart,” he said, coming closer. “This is going to be erotic, controlled pain. We can stop anytime you wish. Just use your safe word. Okay?”
I nodded. “Mm-hmm.”
He walked to the wall and retrieved a set of nipple clamps connected by a delicate chain.
My breath caught.
He’s going to put those on my little button nips?
He leaned over me and carefully applied the first clamp to my right nipple.
The bite of pain made me gasp, but then it faded to a dull ache that sent tingles straight to my pussy.
He applied the second clamp to my left nipple.
“How do they feel?”
“It hurts a little. Burns. But ... but I can feel it tingling in my pussy.”
“Perfect.”
With wide eyes, I watched as he went to the wall and retrieved a flogger – leather falls, not too heavy, but substantial.
He dragged the tails across my belly first. Soft. Teasing.
Then a light slap across my clamped breasts.
“Oh!”
He dragged the tails off slowly, and the sensation combined with the clamps made my pussy clench.
“Oh gods, Master, my pussy is having spasms!”
“Don’t you dare cum without permission. Understand?”
“Hai, Master!”
He began to work me systematically – light flogging across my stomach, then my breasts, alternating between them.
Not hard. Just enough to create sensation. Heat. Arousal.
I looked down and saw my pussy was dripping nectar onto the floor beneath the table.
He had been smacking me for about five minutes, and even with my legs splayed open, I was so wet. So incredibly wet!
“PLEEEEZE MASTER! Please let me cum!”
“Don’t. Hold on, sweetheart. Not without my permission. You can do it. I’m so proud of you for not cumming!
“Hold it. Hold it. Don’t cum. Don’t—”
He brought the flogger tails up and slapped them across my ass where it hung over the table’s edge.
WHAP!
A tiny squirt of nectar escaped my pussy as my stomach and pussy clenched, trying desperately not to cum. Daniel-san smacked my butt about ten times and butt cheeks felt like they were in fire. He moved between my legs, positioning himself at my entrance.
Then he took the nipple clamp chain in his hand and began to lightly tug.
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