Fate Grand Crinkle (Patreon)

With the morning sun streaming in through the sheer greenish-blue curtains, the white walls of the honeymoon suite of the Fuyuki hotel were splashed in gentle aquamarine hues. It gave the very still room an ethereal quality, which was only augmented by the sounds of birds sneaking in through the exterior windows. This was the only sound as the sturdy walls allowed no noise to seep in from the rest of the hotel.

Against the far wall, looming over the rest of the furniture was a massive four-poster bed with gloriously carved oak columns framing a plush mattress. Every other piece of furniture in the room complimented the centerpiece, the dark stained woods blending together nicely.

In one corner several stacked bags disturbed the glowing serenity of the space, standing out amidst the room’s elegant nature. Indistinct little white animals decorated the exterior of the fabric of one, and little cross-shaped shields dotted the other.

The hotel staff had left them there hours earlier, waiting for their owners.

The stillness in the room was broken by a jangling doorknob, somebody on the other side obviously struggling with the key to the room.

In a sudden burst, the door to the honeymoon suite burst open, preceding a series of giggles from the two on the other side of the threshold.

“H-Hey, watch my head Ritsuka!” one said, craning her neck away from the door frame.

The dark-haired man laughed and swung his new bride even more wildly, swooping her form through the air. “Oh?” he said slyly, “Don’t you trust me Mash?”

Mash

Mash giggled, flicking away her lavender-colored bangs. “Only if you carry me across the threshold safely dummy.” she protested. In an effort to take control of the situation, she wrapped her fingers around his bow tie, using it as a handle and a leash. With a tug, she directed her new husband toward the bed. “Drop me on the bed, won’t you?”

The question was bashful, a splash of crimson painting Mash’s cheeks. She was glad to see Ritsuka smile down at her, nodding.

“I suppose I must do as my wife commands,” he said playfully. His eyes wandered her form, tracing it up and down while she remained wrapped within his arms.

She considered that maybe he was admiring the shimmering royal purple silk woven into her wedding dress—adding that extra personal touch he knew she would love—but she knew better: he was most interested in what lay beneath. "What a horny fool." she thought, chuckling quietly.

Using his bow tie, Mash steered Ritsuka to the bed from her comfortable position in his arms, enjoying the weightlessness that accompanied being carried. She giggled the entire way, mostly because Ritsuka was playing up the act of carrying her. He made bold and heroic proclamations the entire way to the bed, telling her not to worry and reassuring her that he’d made many other treks under far more perilous conditions.

Only when he was just a step away from the bed did Ritsuka change things up, feigning tripping and tossing Mash from his arms. For a brief moment, her stomach dropped and she was genuinely weightless, flying through the air toward a landing unknown.

Normally she would have panicked in this situation, but she’d gotten a quick glimpse of Ritsuka’s expression and seen his usual sly smile that told her he had everything under control. Any worry she might have had melted away and she allowed another carefree laugh to spill from her lips. It only became wilder as her body crash-landed into the plush mattress, compressing the material of the comforter beneath her.

She settled into the blanket, enjoying the plush nature of the comforter while admiring her husband. His tuxedo was unbuttoned, and looked slightly disheveled. His bow tie hung limply from his collar, threatening to come undone with another tug of Mash’s hand; she could have sworn he’d been wearing a cummerbund before, but it was gone now.

Her own dress had fared better, mostly because there were no pieces that could come loose, its delicate white lace framing the long panels of purple silk. Its top hugged her form tightly while the skirt billowed out wide, multiple petticoats preventing it from losing its shape.

The ceremony had been as beautiful as they could have hoped for, with all of Chaldea coming to support the pair’s union. Flowers were thrown, doves flew by, kisses were exchanged. It was all perfect and had ultimately led the pair to their present location, a hotel room they’d booked for an entire week. Mash suspected they wouldn’t be leaving at all today.

With her laughter dying down Mash propped herself up on her elbows, looking at Ritsuka.

“So what now?” she asked, mimicking his coy nature as best she could.

At that, her husband’s entire demeanor changed with his head turning downward to his crotch. Redness spread across his cheeks, obviously betraying his embarrassment at what he was about to say next. His hand gripped his groin, sinking into the obvious puff that was badly hidden underneath his black slacks.

“Looks a little puffier than when the ceremony started.” Mash thought.

As if to confirm her suspicions Ritsuka said exactly what she’d been expecting. She’d heard the hiss during their ceremony. It matched the blushing arousal that came with his padding swelling, growing around his groin. “I think I need a change before we do anything else,” he said.

Ritsuka

Ritsuka was paralyzed while waiting for Mash’s answer, just shooting that bashful look at her, waiting to learn whether or not she’d want to pull the soaked padding off of him. Maybe she’d at least let him do it himself.

His nerves grew thinner as she came closer, the impending answer becoming more uncertain with each passing second.

“Am I gonna be trapped in this the rest of the day too?” Ritsuka wondered, rubbing the sloshy, soaked padding between his thighs, “Maybe that’s what she wants. For me to be all soaked with the cum from the wedding splattered across the front. Ugh, the anticipation is killing me!”

The anticipation wasn’t the only thing bothering Ritsuka as every little shift he made from one leg to another shifted the diaper, causing the magically shaped padding to stroke him even more.

Mash observed the pleasurable agony painted across her husband’s face. She was obviously loving it and took her time in rising from the comfortable mattress. Ritsuka was sure that she knew that his little wiggly fidget was gently stroking and teasing him.

She finally came face to face with him, staring into his eyes with all the sympathy she could muster before gripping his shoulders and flipping him around. The move earned a yelp from his throat as Mash twirled on her heel. She and Ritsuka switched places and he felt as though his feet were gliding above the floor as if they’d left it entirely.

Then, like his bride moments before, he was flying and then crash landing down onto the bed. Mash had flipped him to the mattress in a single move, which still didn’t answer his question of whether or not he’d receive a change. With fervent fingers she clawed at the button of his trousers, undoing them quickly before ripping them away.

His diaper lay bare to the room, its little red command seal designs having faded heavily under the heavy yellow stain made by his urine. Mash let her hand drift across the front of the diaper, her fingers making a little zipping sound. Ritsuka visibly shivered. Her nail had strategically trailed across the bulging outline sandwiched between his diaper and his smooth crotch.

Ritsuka’s pleading look hadn’t changed and he was eagerly awaiting Mash's decision on whether or not to change him. When she stepped away toward the luggage piled in the corner he still wasn't sure, not until her hand landed on his diaper bag.

A sigh of relief escaped Ritsuka as he watched her go, the relief of escaping his lukewarm padding was second only to the idea that his new bride would be ripping away the tapes of his Chaldea Defenders.

Despite the many, many times she’d changed him in the past it never got old for him. Even better was that it usually led to more, to a shared passion between the pair usually only explored in a dimmed dorm room of Chaldea.

Mash returned to her love to find him daydreaming. He was so deep into the fantasy that he hadn't even realized she'd returned and only snapped back when Mash rubbed her fingers across the diaper, crumpling it under her grip and eliciting such an enticing crinkle.

He looked up to see her staring expectantly, the bag of supplies in one hand, and two diapers in the other, one for each of them.

“Did you wet too?” he asked curiously, not remembering seeing any of the tell-tale signs from her during the ceremony.

Mash smiled at him coyly, shaking her head. “Nope.”

A question formed on Ritsuka’s lips but was gone when Mash dropped all pretense of teasing him, pressing her hand against his padding and sinking her palm into it. His cock was smothered in the pressure and he drew in a sharp breath of surprise.

“I suspect you did more than wet during our vows. I couldn’t help noticing you shiver a few times.” Mash’s smile became wider as she gave the front of the diaper a little rub, “Am I right?”

Ritsuka blushed and he nodded, remembering the struggle to contain his spurting orgasms that’d painted the interior of his padding not once but twice in the middle of his wedding.

Mash laughed. “Knew it,” she proclaimed, ripping away the tapes of his diaper and breaking the tension she herself had created, “now let’s get you out of that soaked padding huh? I bet something fresh will feel nice.”

Ritsuka nodded again appreciating the lukewarm padding being pulled away from his waist despite that action releasing the aggressively acrid smell within. Mash didn’t react—she never did. She wasn’t particularly bothered by the scent of urine, and Ritsuka appreciated it as it’d helped him get much more comfortable with his diaper-loving nature.

Mash chuckled above him, unpacking all the other necessary supplies: bottles of powder and lotions, a pack of moistened wipes, and the cartoon-covered changing mat that accompanied it all. Ritsuka shifted wordlessly without any orders from his lover. They’d done this dance so many times before that she didn’t have to say anything. Ritsuka did exactly as he needed to facilitate Mash changing him.

The dark-haired mage gripped one of the torn-away wings of his diaper while his other reached for the open crotch. He wished Mash had waited until he was actually on the changing mat before ripping away the tapes but he suspected it may have been her intention to make it slightly difficult for him because his struggling shuffle earned another amused giggle.

“How cute,” she cooed, slipping the vinyl onto the portion of the bed he’d just been occupying. The vinyl of the mat zipped against the plastic of the padding, a soft sound that left reminders of their shared diapered state as Ritsuka returned to his position.

He readied himself for the coldness of the wipes followed by the gentle touch of Mash’s hands working in lotion and sprinkling powder. He even laid his head back in anticipation, but the awaited attention never came, the cold wipe that always elicited a sucking breath not reaching his skin.

Instead he heard an unfamiliar rustling, something he couldn’t quite place the origin of. He lifted his head, turning towards the sound with burning curiosity only to see Mash pulling up the skirt of her wedding dress bit by bit, scrunching the lacy material beneath her hand and revealing toned legs contained by the stockings beneath them.

Ritsuka wanted to ask what she was doing but kept his mouth closed in fascination, watching as the stockings gave way to pale thighs and the dipping mass between them. Her own Chaldea Defender diaper remained an untainted white, with the wetness indicators intact across the front.

She’d pulled the material up enough to reveal the front of her diaper, with the waistband only slightly obscured by the see-through material that made up the outer layer of the dress.

“Wha—?” Ritsuka started to ask but his question was taken from his lips when Mash’s hand reached out, gripping his cock which had not seen fit to calm down in this whole time. Between the promise of touch during a change and Mash teasing him by showing off her own diaper, Ritsuka’s body hadn’t seen it necessary to quell his erection. Even just the gentle pressure of Mash’s delicate fingers were reaffirming that idea on Ritsuka’s cock. She was squeezing but it was mild, only a slight tremble of each finger moving up and down as if she were playing the keys of a piano.

She was certainly playing Ritsuka well because his gasping squirms mirrored her own well enough. The dark-haired mage held delicately in her hands only realized she wasn’t paying much attention to his reactions because her distinct giggling had disappeared. Though it was difficult he looked back up at her, curious about what could have distracted her from such a sight as him struggling.

Her face was a mask of relief, with her eyes closed and her jaw slack she was taken in a pleasure he could hardly understand, that face accompanied a gentle hissing sound snaking out from within her padding.

Based on how much the front of her diaper had started to swell she’d been holding her bladder for quite a long time. Ritsuka was impressed by this, having become diaper-dependent after a spell went wrong and left his body without any chance of holding anything. Mash however just liked how it felt to absolutely flood her padding, to feel the wild intensity of it being soaked because she chose to let go.

Lust flooded him as he watched Mash’s diaper crotch droop further and further. Her wetness indicators faded away in a flash and with what must have been a tidal wave of her own piss splashing against them with such force to make the little command seals disappear as quickly as they did.

Soft moans escaped her throat, sounds she couldn’t have controlled even if she wanted to. Her hand was twitching wildly around Ritsuka, giving gentle tugs as she swayed with the rhythms of her body.

Ritsuka knew exactly what was happening inside that diaper of hers, the way its padding was flooding with a warmth that cradled her waist and groin so securely. All that padding was turning soggy around her, from cushiony cotton to a soaked squishy mess. All except a few parts.

He knew full well that the magecraft in her diaper was shaping the padding against her pussy, the interior rising up and stiffening in all the perfect place to create two cresting ridges that cradled her labia while bumpy ridges criss crossed back and forth in the valley between the two padded hills.

Ritsuka’s worked similarly, giving his cock the perfect moist pocket of pissy padding to hump into while Mash’s left her something to grind against, its molding paying special attention to her vagina. The groaning as her diapers shaped padding swelled brought a smile to Ritsuka’s face.

Once the hiss of urine piddling into Mash’s quieted down clarity returned to her face, like she’d awoken from a hazy dream. The same blush Ritsuka wore before was mirrored on Mash’s face.

“I think I’m gonna need a change after you.” she said bashfully, losing so much of the bravado she’d had just a moment ago.

Mash

With the diaper between her legs thoroughly soaked, Mash released her grip on her husband’s cock, almost forgetting that she’d been holding it like a comfort object. Finishing up Ritsuka’s diaper change didn’t take long. She had not intended on lingering on this part when there was so much more in store for the two of them.

She could tell he wanted her to, whining slightly when the lotioning only took a few moments. While she liked the idea of controlling him in this state she had other plans for their day and her wetting episode had set her back, she truly hadn’t realized how full her bladder had gotten. The pressure was there all through the ceremony but upon arriving at the hotel room she’d been so excited she’d gotten distracted. Only when she relaxed and felt the deluge did she realize.

Without wasting time she taped her husband in a new Chaldea Defender, a pack that she’d ordered from the organization in a slightly larger size just for tonight. The tapes cinched around Ritsuka’s waist to the point where they nearly touched each other, covering the toned muscularity of his stomach.

“There, all diapered up, now go ahead and take your shirt off for me too. I have one more thing for you.” she said.

Wordlessly she crossed back to the luggage, digging into a hidden pocket where she’d stashed one of her wedding presents to him. When she turned back Ritsuka was on his feet, stretching his arms out to show off his bare chest, with his pecks coming through in that way somebody who’s lean and muscular does. His muscles were coiled rope beneath smooth skin, waiting to strike.

“I’ll have to unknot all those I suppose.” Mash thought deviously, returning to him with the pair of onesies she’d hidden in the bag. “Close your eyes and put your arms up.” she whispered.

Ritsuka did as she asked but not without giving a little shiver of excitement first. Mash stifled a chuckle, pulling the garment over his head and stretching it down over his body, kissing his chest and stomach along the way.

She did the same down the front of his padding, listening to the rustling crinkle of plastic as her lips traced down the front. The snap crotch would contain the cutest part of her love’s outfit for a while and she wanted to make sure to appreciate it.

Each snap closed with a gentle *pop*.

Mash stepped back, feeling the grinder form of her diaper rub against her and accentuating her arousal as her husband’s first white and black Chaldea outfit, recreated in onesie form, settled on his body.

“You can open your eyes now.” she said breathily, feeling the air in her lungs fleeing her body at the sight.

Rituka looked down but it was only to express confusion. h\He wasn’t quite sure what to make of the onesie and looked to Mash for clarification.

She blushed, her control of the situation was slipping, much like the mushy material of her diaper wrapped around her waist against her privates, the sensitivity of which was increasing exponentially with each swing of her liquid-soaked padding.

“It’s the first thing I saw you in,” she explained “I like it.”

Ritsuka’s face softened as he started to understand the importance to her, taking in exactly what she’d just said. She didn’t give him a chance to do much else, however, because the following moment her arms were snaking out through the holes in her dress and she was heaving it over her head to be free of its ornate confines.

Her sudden almost nudity left him slack jawed, the tight musculature of her body hidden underneath smooth skin. His eyes zeroed in on the pushed-up breasts locked behind the dress’s white lace bra. Ritsuka was transfixed, practically drooling.

She could very obviously see the want in his eyes and only added to it by reaching back to unclasp her brazier. Mash imagined the bra falling in slow motion for him because he followed it with his eyes only to snap back up to her chest immediately after.

“Not yet Mr. Greedy.” She scolded, knowing exactly what he was looking for. However he was trying to skip everything else that she'd planned and she knew he’d love that just as much if not more.

She herself collapsed onto the changing mat, pointing to the tapes of her diaper. “Now go ahead and get this off me, we’ve got lots more to do.”

Ritsuka obliged, ripping away the tapes of her diaper, looking soaked much like his from not too long ago but with an additional surprise. Buried to its hilt and spreading her lips was a silicone toy.

His gaze flew up to Mash’s in surprise, and she couldn’t stop the embarrassed look. “For the whole ceremony…” she mumbled, bringing her hands up to hide her face.

A smile spread between the two of them, an understanding of shared and mutual horniness.

“Did you want me to take it out?” he asked gently.

Mash shook her head. “Not yet, we’ll need it for what’s next.”

Ritsuka nodded, pulling a thin wet sheet from the wipe container instead. He set to work, cleaning any evidence of Mash’s wet accident from her body. He was deliberately working slowly though and she could tell it was just to elicit a reaction. When he reached her pussy he slowed even more, working the cold material in slow gentle strokes between her labia and the hilt of the dildo.

“Seems like I can’t clean this area enough,” he teased, “every time I wipe it still comes away wet!”

Mash huffed, squirming under his touch. “H-Hey,” she protested, “It’s not your t-turn to take control!” There was a certain amount of trouble getting the words out through her partner’s touch. The pleasure and arousal were affecting her tone much more than she wanted them to, causing her to jolt and stutter. It was easy to see Mash was losing her dominant position.

In a bid to regain it she wrapped one of her legs around Ritsuka’s shoulder, pulling him closer. It took a lot for her to steady her voice but she did so carefully, imparting all the command she could to her former master-turned-husband.

“Now you listen to me. I haven’t gotten the chance to put on my very cute outfit for you yet and there’s still a lot of the day left to go. You’re going to finish wiping me and properly lotion and powder me so we can get on with what I have planned, understood?”

She didn’t feel that her words were especially impactful but they seemed to land well enough for her husband who nodded and stopped playing around. Within minutes Mash was sufficiently diapered in the size XL Chaldea Defender. It was little surprise that her tapes weren’t just touching but that one side overlapped the other completely. All that extra fluff still pushed tight against her in a rather satisfactory way though, even rubbing the protruding base of the dildo that she’d had specially made. It was a perfect facsimile of her husband's cock, and she’d left it nestled inside all this time.

Ritsuka

It was hard for the dark-haired mage to pay attention to much while changing Mash, or rather, it was hard for him to pay attention to the act of changing itself. Instead, he wanted to tease and poke and play, especially upon discovering the naughty secret she’d hidden away during the wedding.

It only served to wind him up further and he was harder than he ever thought possible. More than anything he craved to repay that itch, to drive her as wild as she’d driven him. She wasn’t allowing that though, not just yet.

Mash had made it clear that she was still the dominant one in this situation when she pulled Ritsuka’s face toward her groin—whether this was intentional or not he really couldn’t tell. But when she did it her voice was steady and smooth. She made her wants very clear and he respected that.

He helped her off the bed, seeing that she would have struggled with the new immense girth of padding if he didn’t. Even on her feet she had to keep her stance wide, with four inches of tightly packed fluff spreading her legs apart. Ritsuka felt a similar girth but he was still bigger than Mash and the massive-sized diapers actually somewhat fit him compared to her wearing what amounted to a comically large nappy.

Luckily she’d apparently had the foresight to bring her own outfit to the bed so she didn’t have to attempt to cross the room.

“Turn around.” she insisted.

Ritsuka did as he was told until he got the confirmation to look again.

His wife stood tall and proud, or at least as much as she could with the extra padding spreading her legs anyway.

Her onesie wasn’t a recreation of what she’d been wearing when they first met, but it was easily his favorite outfit she'd ever donned. The cloth recreation of her Shielder outfit was lovingly constructed with lace instead of harsh metal and hugged her form—including the thick sphere of padding—tightly.

Memories of her protecting Ritsuka after the Rayshift System sent them to the Fuyuki singularity flooded him, reminding him of the very event that’d caused him to fall in love with her.

He was at a loss for words and shuffled forward to embrace her tightly.

Pulling Mash into his arms brought forth a deeply relieved sigh from Ritsuka, who felt it reciprocated by Mash when her arms wrapped around his waist.

“It’s perfect,” he whispered.

From his chest, he heard a muffled response. “I’m glad.”

They stood silently, enjoying their profound love for one another.

It was Mash who broke the silence by running her hands up Ritsuka’s abdomen and then her own all while whispering a spell.

“Oh?” Ritsuka queried, “What was that?”

“You’ll see,” she teased.

And apparently, she’d determined that he’d see sooner rather than later because in the next second, she was pulling him down towards the bed.

Mash

Mash had gripped Ritsuka’s collar with zeal and pulled him on top of her while falling back to the bed. The smattering of changing supplies she’d neatly laid out before toppled to the ground as Ritsuka’s lips fell against hers, pressing together and smacking wet and warm.

She kissed him back, her hands flying all over his body to grope and squeeze her way from his arms to his chest to his hips, eventually down to his padded ass. She loved the feeling of those tensed muscles through his onesie and, despite the thick padding obscuring them, his tightened glutes as well.

She could tell he was fighting an uphill battle, being at a disadvantage due to having to keep one hand on the bed to prop himself up, but his fingers found purchase in all the spots he knew Mash would love. A sensual caress of the ear, trailing down her neck, his fingers teasing the bud of one nipple through her onesie, using the friction of the fabric to make it stand erect. The other was pinched to attention, sending a shocking jolt through Mash that almost made her yelp.

She laughed wildly as his hand flitted over her stomach, gripped her plastic-covered hip, and then finally found its home on the crotch of her padding where the weight of his extremity pushed the dildo another inch deeper.

Her wild laugh turned to a gasp. Her brain was flooded with dopamine and her limbic system fired rapidly. She’d experienced plenty of sexual activity in a diaper before but this was different. At that moment it was as if the arousal and horniness she’d felt were the mere ideas of the concept—something explained to her.

This was the real thing.

“More…” she moaned, making not a demand but a request. She was officially relinquishing control, letting him take the lead.

He seemed to understand exactly what Mash wanted as his fingers gripped the puffy crotch of her diaper and through it the very base of the dildo inside of her. Mash felt the protrusion glide from her soaked cunt effortlessly, rubbing against her vaginal walls as it went. Every lovingly recreated cock vein added texture to the experience, letting her know Ritsuka without even having to pull her padding aside.

Feeling out her eagerness, the mage gently resheathed the dildo back into Mash’s spasming pussy, making sure it fit easily within her, and that his movements were right. Knowing him he was looking to her for confirmation, but she hardly cared. Her head was thrown back in ecstasy and her eyes closed as she focused on the feeling of sexual gratification.

“Please M-Master,” she begged, “m-more.”

Apparently, that was all Ritsuka needed because the pumping started to become steady, with each push bringing a wall of fluffy padding to the groin, rubbing against her and stimulating her whole pussy.

Mash moaned aggressively, gyrating her hips upward toward the attention. Ritsuka’s speed increased in response to her hip thrusts helping her build to the first orgasm of the night. Mash’s body was practically vibrating, filled with pent up sexual energy building to its apex with each thrust of the dildo into her body.

She was close, with her clit swelling to peek from its hood and be exposed to the rubbing of her diaper’s cottony core. That rubbing turned the vibrations of sex to lightning, jolts of which shot pure pleasure up her spine directly to her brain.

Mash’s body went into intense overdrive, pushing her over the edge into a yelping orgasm. Her hands reached out, one gripping the bed while the other met with Ritsuka’s. She intertwined her fingers in his, seizing his hand as she rode out the oncoming waves of her body cumming.

She was so absorbed in the sensations of cumming that the pressure in her abdomen hadn’t even registered. She’d completely forgotten about her spell until a wild spray of heat rocketed from her body, soaking the padding she’d just cum into.

Ritsuka

Feeling the motions of Mash’s body as she rode the wave of her orgasm brought a smile to Ritsuka’s face. One hand was locked with hers while his other pressed into her diaper. When the padding started to heat, with a rapid yellow stain spreading across the seat, Ritsuka found himself even more pleasantly surprised. He could feel the force of Mash’s accident through the plastic shell of the diaper.

Her urine was a torrential river, soaking the interior padding and causing the shaped core to form the grinder base with a perfect little slippery nook for her clit. This wasn’t a normal accident though. No, Mash’s diaper continued to swell rapidly with no signs of slowing down.

Ritsuka realized the magic she’d worked on them now, the pressure of his own bladder becoming a nagging presence. He suspected he wouldn’t be far behind Mash in terms of wetting himself.

Not wanting to waste any time—and suspecting he didn’t have much to waste anyway—Rituska shifted, untangling his fingers from Mash’s and positioning himself above her, practically squatting over her waist. Gently, so as not to overstimulate her while her orgasm wound down, the dark-haired mage took his wife’s legs, guiding them up and to rest on his hips.

Mash chirped happily, wrapping her legs around her partner. Ritsuka knew full well how much she enjoyed the mating press since she’d told him so enough. However he didn’t press the crotch of his diaper into hers, instead looking down between them, staring at the space between their padded crotch.

He could feel Mash’s eyes doing the same. “Please. I want more—give me more master,” Mash whispered, trying to egg Ritsuka into driving his padding into hers but he wasn’t ready, not yet.

He was focused instead on the pressure of his bladder and the intense need to pee. It was a wonder the incontinence he faced hadn’t produced wetness in his pants yet. However, now he was focusing, pushing with all the force his weak bladder and urethra could muster.

When that rush of urine shot from his dick Ritsuka himself groaned. The intensity of his wetting sent shivers through his body, amplified by the padding swelling around his cock. Each ounce of fluid he deposited into the diaper served only to make it squishier, making the molded padding that surrounded his member deeper.

Not only was the interior of the padding getting to be wondrously lewd and pleasurable but now the exterior was drooping and sagging, moving to meet Mash’s below it. Ritsuka felt his padding rest against hers after what must have been several minutes. His bladder simply refilled at a pace faster than he could empty it, leaving him in an endless cycle of wetting.

It was stifled not by his own control but by his ability to hold off an erection from disappearing. He couldn't stop himself from getting hard. Now he felt ready and obliged Mash’s requests to hump his soaked padding into her own.

He dropped into Mash, earning a moan for his efforts. The interior of her diaper ground against her just as his was, with the shaped interior padding cradling just the right spots. The dildo pushed into her with the same slow rhythm that he adopted, giving her the attention of his slow deep fucking.

His own dick plunged through the shaped padding, fucking the soaked core while his bride provided the feedback of another person. Despite being separated by layers of plastic and padding they’d never been closer, each giving the other stimulation through their diapers.

The pace picked up between the pair, with the heavy *plap* of one diaper against the other turning into a steady beat all backed up by moans from Ritsuka and howls from Mash who’s hands gripped for purchase on her partner.

Ritsuka thrust his hips downward feeling another pressure building, but unlike the one in his bladder he suspected this one wouldn’t last minutes. He wanted to hold back but could feel it becoming inevitable as his member slid against the warm sloshy material of his nappy, the soaked padding was driving him to an orgasm.

Without meaning to, Ritsuka drove his hips down hard, like he was trying to bore through his padding and Mash’s. His cockhead twitched, its length spasming as his initial orgasm shot through and splattered the new interior of his diaper.

That simple action was enough to drive his bride to another pissy orgasm as well, causing her diaper to swell more.

Mash

The buzz of sexual satisfaction shot through Mash as she felt Ritsuka lift himself away. She expected him to flop next to her and bask in the afterglow of his orgasm but he stayed squatting over her.

She looked down, curious to see the state of her diaper after all that had happened only to be momentarily blinded by a purple glow from the landing strip of her padding and its mingling with a brilliant blue from her partner’s.

She looked up to Ritsuka in confusion, whose face had spread into a wide grin. “You’re not the only one who can do magecraft,” he teased.

Mash understood what he’d done when she felt all of the accumulated exhaustion she’d felt from the last twenty minutes vanished, leaving her refreshed and ready for more. She imagined her new husband was in a similar state.

“I see,” she purred, welcoming the surprise, “Well? How about we do that one again.”

Ritsuka seemed happy to fulfill her request and dropped into Mash again. She stopped counting orgasms from the mating press after five and had no idea how many times they’d each come when they went from doggy style to a loving missionary where their tongues intertwined through their humping.

She didn’t presently have the mental capacity for numbers like that only cumming and making sure her partner did the same. In between each restorative burst of magic their diapers would swell with more urine from Mash’s filling spell spilling from their bladders into the diapers.

The squishier they got the more exciting the lovemaking proved to be and they wanted to add to it. Mash wasn’t sure where her partner had pulled the bullet vibes from, but when they pressed against her nipples and hips she didn’t protest. Magic harmlessly bound them to her body and the vibrations set off the sensitive regions of her body that her diaper didn’t cover.

Similarly, when she slipped a bottle of lube from beneath the covers Ritsuka was confused but didn’t argue when she pulled back the waistband of his diaper to dump the entire thing in, adding an element of heated slime that made the entire thing slicker and slipperier than it'd ever been before.

The world fell away around the pair as they rutted happily, using each other to get off in their diapers. Only the comfy area of the four-poster bed existed, everything else beyond it didn’t matter.

Feeling like her partner deserved more attention Mash flipped Ritsuka onto the bed, taking her position above his groin. Only now did she really come to appreciate the size of her diaper when its weight was allowed to droop from her hips.

The diaper had doubled in size, brought there by her wetting continuously through her and Ritsuka’s love making. She had to admit, it impressed her, not only was the anti-leak magic she'd worked on the padding holding up but so was the diaper itself. The material had stretched to accommodate her accidents without deteriorating in the slightest.

She caught Ritsuka admiring the size of her nappy too and shot him a cocky smile before lowering her full weight into him. The way his eyes rolled back she was sure he was enjoying the slow simulated insertion into the padding pussy of his diaper just as she enjoyed the Ritsuka dildo surrogate sliding into her.

The way it spread her wet, aching cunt sent shivers through Mash, all paired with the gentle vibrations whirring away at her hips and nipples. With her waist positioned over her husband's, Mash started grinding, depending on the outer shell of plastic to shift the padding in each of their diapers in a satisfactory way.

To no one's surprise, it did a wonderful job, with the shaped padding grinding into Mash’s clit while she bounced against her partner. She rode him breathily, bringing his hands up to caress her breasts and support her while she grinded against him, enjoying the contortions of his face while he fought the urge to spurt in his diaper again.

When he inevitably did she only redoubled her efforts, trusting the rejuvenation magic to take care of his fatigue. She wanted to see him do it again and did. Then again and again and again. She enjoyed immensely as his face twisted and scrunched in response to her motions.

Not only that but he was looking for the same from her, but wasn’t getting it. She only gave him an amused look after each of his spurting orgasms that painted his diaper with cum. This look solidified her control of the situation, letting him know that she could maintain her composure while he came at her whims.

It was intensely gratifying to Mash, especially when she started picking up the pace and came herself. Ritsuka only got to see that because she allowed it.

She sat above her husband with intense satisfaction, considering what position she should try on him next.

“Maybe reverse cowgirl.” she thought, turning around with the full intention to set herself back down, but then she stopped. There Mash was kneeling, on her hands and knees with her sagging, soaked diapered rear pointed toward Ritsuka when a loud rumble shook her whole stomach, causing her to pause.

A devilish idea caused a smile to spread across her face, and rather than setting herself back on her husband's diaper she backed up, dragging the soggy seat of her diaper across his body till it found purchase on his chin, just at the edge. She didn’t want to smother him… at least not yet.

Ritsuka

Even with the rejuvenating magic fighting off enervation, Ritsuka was reeling from the veritable cock milking that Mash had just performed while sitting on top of him, so much so that he didn’t notice her shifting on top of him until the back of her diaper was touching his chin.

He looked up to the mountainous plastic-covered back of the diaper, trying to discern her intentions when he caught the rumble from her abdomen. So many thoughts ran through his head. He wondered if she was serious, if he misheard if he wanted this.

He didn’t get a chance to consider long or protest though because the back of Mash’s diaper exploded backward with amazing force, covering Ritsuka’s face in a second flat. His senses were consumed by the padding as he suddenly couldn’t see anything through its astounding bulk. All he can hear is the crinkle and squish, both the interior and exterior working in tandem to block out all sound. The heat of the diaper pressed against him, enveloping his whole head quickly. Last, but not least, what he expected to be the worst part quickly proved to be the best because the potent smell of apples and cinnamon hit his nose.

Ritsuka hardly believed he’d almost forgotten the transmutation alchemy on the Chaldea Defenders. Oatmeal was the only mushy mess that would fill out the back of either of their diapers.

Ritsuka felt his partner lean back, pushing her body away from his and positioning the diaper over his head fully. Her movements were careful and she brought the weight of her waist down gently till she was resting on his face.

Ritsuka found her hesitance cute. She was so gentle in making sure her oatmeal-filled diaper wasn’t pushing the line. He wanted to encourage her but couldn’t do much but let out a muffled mumble beneath the padding. That wasn’t enough so instead he wrapped his hands up around her hips, pulling down while pushing his face up against her diaper, burying his head even deeper into the mushy seat of her diaper.

That was all Mash needed to start grinding against her face, an action that brought immense satisfaction to Ritsuka. He felt his cock strain against the soggy padding cock sheath encircling it. Through the filter of sagging plastic he caught the sounds of Mash moaning which only excited him more, though it was paired with the sound of something he couldn’t place.

When the buzzing vibrations hit his diaper he immediately recognized the oscillations coming from the head of a magic “massager” wand. It was his turn for moans and howls to be filtered through padding now.

The tremors caused by the toy shook through his whole diaper, rocking not only his cock but his prostate. He squirmed and struggled while Mash carefully worked the length of his dick with the vibrator, slowing it down and speeding it up at random intervals, driving him gradually toward the edge while she gently rode his face.

He could feel that she was leading him to cum at the same time as her and he obeyed those signals, determined to climax at the same time as his new bride. The vibration of the wand reverberated through his whole body, doing more than massaging his cock and prostate with its motions.

Like his partner before him, Ritsuka felt his stomach rumble. Moments later the same oatmeal mush was filling out his diaper, causing its bulk to fill the space between his thighs and dragging its crotch down to his knees. He worried only briefly about the diaper’s capacity and whether or not he and Mash were at risk of ruining the comforter to their bed, but the buzzing of the wand shook the squishy, oaty muck in his diaper and caused him to quiver in time with his lover.

Ritsuka’s cock spasmed again, this time shooting more cum into his diaper than ever before. The twitch ran through his groin and up his back, his muscles tensing in response to the explosion of milky cum soaking into his diaper along with everything else he’d already marred the interior with.

Ritsuka was experiencing the hardest orgasm of his life at that moment, bucking and pushing his extremely full diaper into the vibration wand his partner teased him with while she rode his face.

Above him he could feel a very similar shaking from Mash through her thighs, apparently, his face provided a satisfactory perch to grind against because she too was cumming again.

The rejuvenating magic shared between the two was starting to wear thin. At least that's what Ritsuka suspected when Mash pulled herself off of him and herself up to the head of the bed. Neither of them imagined they had the stamina to go another round like they had been and a heavy breathing shared between them confirmed it.

Ritsuka himself was greedily taking in gulps of the non-oatmeal-scented air that hadn’t been fed through his wife's diapered rear. That wasn’t to say he hadn’t enjoyed it though as something about Mash gently smothering him with her diapered rear was intensely sexy. If she asked he’d happily do it again.

His eyes drifted down Mash’s form, her body glistened with sweat and her eyes gleamed with satisfaction. Sometime during their fervent love making her own onesie had disappeared while Ritsuka’s remained though it had no chance to close now due to the size of his diaper. The nappy pulling at his waist was the size of a couch cushion and easily weighed about half as much as he did.

"I-I’m surprised it held up so well.” Ritsuka remarked, prodding the stained nappy curiously. Mash laughed, taking her husband by the shoulders and pulling him up toward her.

“It seems we each worked some spells into the diapers without telling the other. I was impressed with your healing rune hidden under the landing strip, it made for a lot of fun.”

Ritsuka laughed, enthused to hear they’d apparently had similar plans. He followed her tugging insistence while enjoying this connection between them, not questioning why she was leading him into her lap and just accepting it.

He watched dutifully as she removed the slowed bullet vibes from her chest. Her magical circuits around that finger alighted for just a moment, imbuing a familiar spell into the enticing breasts. Ritsuka followed her positioning, knowing from experience that he had to rest his head right at one perked nipple. There the first drop of milk threatened to fall outside of his mouth.

“I think you’ve waited long enough, all that hard work has to have made you thirsty and Mommy Mash knows just what you need.”

Ritsuka stuck out his tongue, catching the droplet of breast milk as it fell. Its sweet flavor practically exploded in his mouth. That was all it took for him to latch to Mash’s tit, suckling at it and hollowing his lips to draw in all that he could.

The dark-haired mage knew full well he was greedy when it came to Mash’s breast milk but above him his partner moaned, leaning back as she reveled in the feelings of contact and connection. It was in these moments when he wasn't responsible or in control that he was allowed to be greedy.

Above him, Mash chided him slightly but didn't stop him at all. He suckled all the more because of her words, caring only for the gentle trickle of liquid into his tummy. This earned a laugh from Mash, who enjoyed seeing him in this state.

Gradually Ritsuka felt his eyes flutter, the exhaustion from the day creeping in now that he was relaxing with Mash.

What had been the glorious glow of the morning sun before had turned to a purple and orange haze seeping in through the window. The last light of day was fading away. The dark-haired mage comfortably dozed off while drawing in another splash of breast milk.

He was content with day one of his honeymoon and with six more to go there was no telling what other diapered surprises the happy newlyweds had in store for each other.