#sub d.o

     You had finally had enough. After 5 months of countless dreams with Kyungsoo writhing underneath you in pleasure, wearing a collar and calling him kitten as you put him in his place, you had finally just snapped. It was going to be his birthday soon, and you had stumbled upon a sex shop near your work as you chose to walk home instead of driving. You stood outside for a few minutes, debating on entering until you saw something shimmering through the glass and immediately walked inside.

     There, in one of the first few aisles, was an entire section dedicated to petplay. But one object had caught your eye. There was a collar made of black leather, but what had really caught your interest was the bold silver letters that spelled out KITTEN across the center of it. You didn't even look at the price tag as you immediately grabbed it off the shelf. You were about to go to the counter to just buy that, but stopped and looked around the rest of the aisle with a wicked smirk.

     In the end you left the shop with the collar, a matching leash, a buttplug like the one that was in the video, and a lacy pair of cat ears that reminded you of some black lingerie that you had at home, though you had never used it. Upon entering your house, you rushed to your bedroom to shove the lingerie in the bag with the toys you had bought and hid it. You only had to hide it for a few days so it wouldn't be that hard. You took the collar out of the bag to hide it somewhere else before hiding the bag in your underwear drawer. The days flew by as you thought about all the fun you would have with your boyfriend on his birthday. You were beyond ecstatic when the day had finally arrived.

     You helped Kyungsoo bring in the arm full of presents that he had gotten from countless fans and the boys- Chen's fiancee even got him something, which you found very sweet- and set them on the dinner table, deciding you would do something with them tomorrow. You excitedly turned around to face your boyfriend with a smile. He chuckled at your facial expression as he set the last of the presents on the table.

     "What?" He asked with his gummy smile that made your heart melt, but at this moment all you could think about was how good he would look as he was screaming beneath you. A sultry smirk graced over your lips as you walked closer to him.

     "I have one more present for you." You told him as you wrapped your arms around his waist, making his breath come out in short pants and the tips of his ears turn a light pink. "I want you to go upstairs, in the bedroom. Your present is in a small black bag in my underwear drawer, and I want you to be wearing everything in there by the time I get to the bedroom." His breath hitched as he raced upstairs to see what you had planned for him.

     You waited a few minutes before walking slowly up the stairs. Once you made it to the door, you entered and looked around the room until you saw the light on under the bathroom door. You walked over and tried to open the door but found it locked. Concerned, you knocked lightly.

     "Baby? Are you alright?" You asked. It took a few minutes for him to respond.

     "U-uh yeah. I-I'm alright." His voice was shaking as he spoke, making you even more concerned.

     "Alright then… are you gonna come out?" Kyungsoo bit his lip and looked at himself in the mirror. The cat ears on his head blended into his slightly messy black hair, the black lace panties that matched them gripped his ass perfectly and the tip of his hard cock was peeking over the edge of them as precum dribbled out, almost staining them, and the tail that hung from the buttplug shoved in his ass kept brushing against the back of his legs making him even more sensitive (the panties he was wearing had a hole in the back shaped like a heart, so he could have the buttplug in at the same time he's wearing them). His ears were bright red and he tightly shut his eyes, too embarrassed to look at himself further.

     "D-do I have to?" 

     "Do you not want to?" He hesitated at your question. "Baby, it's alright. I love you, you know that right?" Kyungsoo let out a sigh to comfort himself before looking in the mirror again.

     "I know… I love you too." You smiled and sat down on the bed.

     "You can come out when you're ready, baby. I didn't mean to pressure you." He smiled before taking a deep breath and stepping into the bedroom, looking at the floor. You looked up as soon as you heard the door open, your jaw dropping as soon as you laid eyes on him. You bit your lip and walked toward him.

     "Fuck, baby. Can you turn around for me?" His face turned even redder than it was as he did as you asked. You let out a low groan as you saw how perfect his ass looked in the panties he wore. You reached forward and cupped his ass in your hands, squeezing it harshly. Kyungsoo let out a loud whimper and grinded back into you, making him moan louder as the plug pushed deeper into him. You moved down to his neck, sucking and biting to leave marks as he leaned his head against your shoulder. His left hand reached up for your hair, pulling you closer to him as the other hand held yours tightly against his hip. His breathy moans echoed around the room as he continued to grind his hips back into yours, pushing the plug inside of him. You smirked against his neck and moved up to whisper in his ear.

     "I have one more present for you kitten." He shivered against you at the nickname before you pulled away from him and moved to grab the collar and leash from your bedside drawer. As you grabbed the collar, you looked at the box that you stored your toys in. You opened it and pulled out the strap and lube, smirking as you set it on top of the cabinet, letting Kyungsoo see it before closing the drawer. Your boyfriend whined at the sight of his favorite toy before gasping as you turned around with the collar in your hands. Precum oozed out the head of his dick when he saw the object. You walked forward , dragging him to the full body mirror you had in your closet door and fastened the collar around his throat, grabbing his face to make him look at himself.

     "Look at how pretty you are. Don't you think you look pretty?" He whimpered, his knees buckling beneath him.

     "Y-yes. M-Mistress's pretty kitty." You smiled and attached the leash to the back of his collar, tugging it back to test his reaction. He moaned loudly as the collar pulled against his neck, restricting his breathing. You smirked, pleased with the reaction you received. You walked to the entry of the door, pulling your boyfriend on the leash behind you. After a few steps you turned and saw him walking upright behind you, making you stop.

     "I don't think kittens walk on two legs, baby." His eyes widened and stood still for a second, taking in your words carefully, before moving to his hands and knees. You smiled and pet the spot behind one of his cat ears.

     "Good kitty." He let out a moan that resembled a purr as he slightly nuzzled his head into your hand. You pulled your hand away and continued walking to the door. The whimpers and whines he let out continuously got louder as the plug shifted around in him with every movement he made. You stopped and dropped the leash as you reached the door, making him look up at you in confusion.

     "Stay." He obediently sat at the door and watched you move to sit at the edge of the bed. You looked up at him and patted your lap, silently telling him to come to you. His face flushed red and he slowly started crawling his way over to you. He sat down in front of you, looking up at you to give him another command. You chuckled fondly at him.

     "Up here kitten." You told him as you patted your lap again. He slowly stood up and straddled your lap. "Good boy." You cooed up at him and pressed light kisses up his neck. He gripped your shoulders and whimpered as you started biting and leaving a trail of bruises on his throat. You squeezed his ass and started grinding his hips into yours, making him whine louder and moved his hands to tangle his fingers in your hair.

     "M-mistress, m-more…" he mumbled barely above a whisper. You flipped both of you over so you were above him and moved your hands to cup his ass under his panties and slowly took them off. His cock rested against his stomach, leaking precum out of it's angry red tip. You flipped Kyungsoo around, pressing his face into the pillows and pulling at his 'tail'. His cries of pleasure echoed around the room as you thrusted the plug in and out of him slightly, stretching him out before removing your clothes. You pulled the plug out of him slowly, letting him feel all of it before you set it on the bedside table. As you set the plug down, you grabbed the strap-on and lube, relishing in the whimpers your boyfriend let out at the sight of it. You thought for a second before you reached back in the drawer and grabbed a black silk ribbon, using it to tie his hands behind his back. As you fully fastened the strap-on around your waist, Kyungsoo pushed his ass up and craned his neck to face you.

     "Please fuck me mistress! Y-your kitten n-needs you!" He whined out and bit his lip, looking back at you with half lidded eyes. He asked so nicely, you couldn't even think of denying him as you quickly thrusted your hips to meet his. The only sounds that could be heard throughout the room was the headboard hitting the wall with every thrust you made, skin slapping loudly against skin, and your boyfriends beautiful moans and whimpers. You pushed his hips down to meet the mattress, making him whimper at the feeling of the sheets against his dick, and continued to fuck him like that. He mewled beneath you as you continued to pound into him, every thrust making him grind his dick against the sheets.

     "F-fuck mistress! N-need to cum, p-please let me cum!!" You smirked and leaned down to nibble on his earlobe.

     "Go ahead kitten, cum for mistress."  He squeezed his eyes shut and whimpered as he let go, his cum staining the sheets and rubbing against his stomach as you continued to pound into him. At first he thought you were just riding him through his orgasm, but he began to whimper as his dick started growing hard again at the feeling of you thrusting into him. You continued to pound into him, even after he came two more times. After he came the third time, you flipped him over to face you. You readjusted the cat ears on his head and smiled down and his fucked out face, drool covering his chin and tears streaming down his red cheeks.

     "My kitten looks so pretty like this. Is mistress making her kitten feel good?" He whimpered and weakly nodded his head, not trusting his words. You smiled and pulled out of him, taking off your strap-on and climbing on top of him. You sank down on his throbbing cock, making him hoarsely moan as he squirmed beneath you.

     "Time to make mistress feel good, my pretty little kitten." He whined and threw his head back into the pillows below his head as you began to slowly start bouncing and grinding  on his cock. You sped up, making his legs shake and kick beneath you.

     "M-mistress, please." He whined weakly beneath you as he looked into your eyes, pupils blown wide with lust. 

     "Are you gonna cum kitten? Fuck- Gonna fill mistress up like a good boy?" You teased, bouncing faster on his cock. He nodded rapidly, weakly bucking his hips up to meet yours as more tears streamed down his face. 

     "Please…" he whimpered as he looked up at you with need filling his eyes. 

     "Go ahead kitten, cum for your mistress." His mouth fell open as he silently moaned out in pleasure. He let out a high pitched whimper as he came inside of you, which triggered your own orgasm, making you groan loudly above him. You slowed down, before stopping and gently climbing off of him. You pulled him to sit up so you could untie his hands from behind him and took off the headband. You pet his hair down, making him nuzzle his head into your hand as you removed the collar from around his neck, setting it with the rest of your toys. You smiled softly at him with love filling your eyes before pressing a light kiss to his lips. 

     "I'll be right back baby." He weakly nodded before leaning back into the sheets, immediately sitting back up with a scowl on his face at the feeling of the wet, cum soaked blanket against his skin. You walked into the bathroom, starting up a warm bath, heading back to your boyfriend once it was done. 

     "Do you think you can stand?" He pushed up off the bed, almost falling over on the first step. You caught him with a chuckle before picking him up bridal style. He buried his face in your neck in embarrassment as you walked him to the bathroom,  gently laying him down in the tub. He whined as you turned to leave, making you turn back to face him. 

     "I'm gonna go change the sheets real quick, unless you want to sleep on those." You said with an eyebrow raised. He quickly shook his head and let you leave the room. You came back a few minutes later and joined your boyfriend, moving to sit behind him so you could hug him to your chest. Kyungsoo snuggled into you with a content sigh, placing his arms over yours and leaning his head back on your shoulder.

     "Sooo… where did you get all of that?" He asked, turning his head to look you in the eyes. 

     "A sex shop not too far from my workplace. I bought them a few days ago." He nodded against you before he looked away with his face a light shade of pink.

     "W-why did you think of p-petplay?" You chuckled and pulled him closer to you.

     "A few months ago I saw you watching that video." He furrowed his eyebrows in confusion, mumbling to himself before a look of realization fell across his face. 

     "W-why didn't you say anything!" He asked, his face burning a bright red. 

     "I was going to wait for you to tell me, but I got impatient. I thought you would be embarrassed if I just brought it up."

     "Well it's embarrassing now!!" he said as he buried his face in your neck. You chuckled and hugged him tightly.

     "I'm sorry baby." You said as you pressed a kiss to his forehead. "I love you." You felt him smile gently against the side of your neck.