Li groaned softly, tossing and turning in his bed and trying to tune out the sounds of the crinkling that came both from the sheet on the mattress and from the bulky diapers tapped around his hips. The diapers weren't actually on display at the moment as he was dressed in a full body sleepy, green and soft and fuzzy and it even had a teddy bear hood which he had up not because he wanted it up, but because Sakura and Madison had and he knew better then to argue.It also had (to his utter dismay) a butt flap for quick diaper checks, he'd long since lost their confidence that he could at least tell them when he'd had made use of the diapers.  
His bed of course was really just a big boy sized crib but calling it that in front of him was a sure fire way to put him what what his girlfriend Sakura dubbed 'grumpy Gus' mode for at least a hour. Then again it wasn't like it was hard to put him in said state these days.
His bedroom had been changed to fit his new attire, gone were action figures and comic books, replaced with baby toys and story books put on high shelf's out of the hands of little book who might just wreak them and his computer desk had been replaced with a changing table, fully stocked in a dazzling display of different types of diapers.
there were times when Li marveled at how fast and easy the switch to his room had been made, and other times when he cursed it. All of this had only started a month, maybe a month and a half ago, it was getting harder and harder to keep track of time as Sakura made sure he only had baby entertainment and it was turning his brain to mush. 

It had all started with him, Madison and Sakura waiting in line for a movie, technically Li and Sakura were suppose to be on a date but as always Madison had wormed her way into coming along a a third wheel. 
Li believed though Sakura brushed it off as silly that the brunette was livid that they were dating as she'd wanted Sakura for herself, thus she made sure to come along and slow down any potential romance. 
Madison had gotten them all drinks for the wait in line, making sure to get Li a super sour lemonade that had him making faces when the first of what would soon be many accidents happened. 
One second he was trying to convince the girls to see a new action movie instead of a romantic comedy and then his crotch had grown warm and the warmth spread down his legs as he trailed off. 
He hadn't even figured out what was happening until Madison with clear glee in her voice pointed it out.
"Oh my gosh, Li are you WETTING yourself?" she asked in a loud voice, getting attention from everyone in the line and some laughter as his cheeks turned bright red.
"I..I.." he'd stammered, as Sakura when from shock to biting her bottom lip trying not to laugh.
"I -snk- I think we better cancel the movie." She said barely holding in a laugh. 
"Y-yeah I..Um..I'm sorry." Li had squeaked out. 
"It's ok, accidents happen. Maybe lemonade just doesn't agree with you." Sakura said, giving a warm smile.

Just thinking about that look on her face, the mirth.. and knowing it would soon be replaced with a motherly concern caused Li's body to betray him. Sakura  had made it clear that good little boys in diapers don't have 'fun' in their diapers and with him being in them 24/7 these days the urge to relive himself was building up. 
Rolling over onto his tummy and looking over at the baby monitor on the dresser, he decided to risk a few humps, he might even get lucky and Sakura would be too busy to be paying attention.
grinding away he let his mind flash back to 4 days after the first accident, when many more had followed.

There they were, in the drug store and standing in the diaper section, Sakura holding Li's hand and looking over the choices the store offered for protection for big boys.
Thankfully Madison hadn't been there though they were shopping on her dime. Li had tried and failed to protest that he didn't need protection, and even if he did he could of paid for it himself, but she had just shook her head and said as a friend it was her duty to help out, and to only get the best. 
She had stayed behind to get ready to make Li some new clothing to go over whatever protection they settled on. 
Between blushing so red he thought his hair was gonna catch fire and holding Sakura's hand, it was clear to anyone who passed them just who the padding was going to be for and as a group of older girl walked pass the entrance to the section and laughed as they took in the scene, he was almost over whelmed with a urge to suck on his thumb.
"S-Sakura I changed my mind. I-I don't need protection! I-I'll just up how often i got and sit on the potty!" Li whined, already on a schedule of sitting on the potty once a hour, every hour he was awake for 5 minutes and still having accidents.
"Li, we've talked about this." Sakura said in a stern voice, which was only partially true. her and Madison had talked about it and Li's whines had been for the most part ignored, much like how you would tune out a fussy toddler who had failed potty training.
"Clearly the potty trips aren't doing enough. you don't wanna keep making puddles do you? won't it be nice to keep your pants and shorts clean?" 
"No! well..yes..But..I'm not gonna wear stupid diapers! I'm a big boy and don't need them!" Li had huffed, stomping a foot and crossing his arms.
He also started to do something else that was announced with a loud gross sounding fart and his eyes had gone wide as the seat of his pants started to puff out, a bad smell filling the section.
"..Really Li?" Sakura had asked, a hand coming up and holding her nose then letting out a sigh. "Well, that certainly showed me.." She said sarcastically, then put her hands on her hips. "Still think you don't need diapers mister poopie pants?"
tears were welling up in his eyes and though Li was able to clamp his bowel's shut, the damage had been done.
"I..That... was just a fart?" he more asked then said and Sakura rolled her eyes. 
"And I'm the queen of merry old England. you might as well finished unloading. And I don't wanna hear any more lip about going back in diapers, I WILL spank your bottom mister, poopie pants or not." She said and wagged a finger at him.
Li went to argue, to say he wasn't some submissive pants pooping brat and she wouldn't dare, but instead..
"Yes ma'am." He mewed and slipped his thumb into his mouth, sucking on it and semi squatting as he went back to ruining his undies and jeans. 
Sakura just smirked and as she grabbed a pack of the thickest diapers they had in Li's size (and it had a cute animal print to boot!) she also snagged a package of pacifiers off of display on their way to the check out.
After paying for the items and getting a mixture of looks of disgust and amusement from the staff they had been off to the store's bathroom and Li had been stripped of his pants and undies (and whatever small sherds of pride he had left) 
Even then with his soiled clothes in the trash, he tried to resist being put back in diapers after Sakura had cleaned up his backside. 
"Li, I'm going to say this ONE more time, get that butt, on this diaper.." She said, pointing to a unfolded diaper on the floor. "Or your going over my lap." 
"You don't have the ba-" Li had been in the middle of saying when she'd grabbed his wrist with with more power then had had expected from her since this was all her, no cards, had him over her lap.
"You were warned." She said in a disappointed voice, then started to bring her hand down over and over on his bubble butt.
By the time the spanking was over all fight was drained out of Li and in just his t-shirt and one of the bulky diapers and his socks and shoes, he'd been lead out of the store holding Sakura's hand and carrying his diapers..and one of the paci's in his mouth as he suckled on it.

Recalling the rush of humiliation and just how small and helpless it had made him feel and how clear it was the rush of power had excited Sakura, Li's humps picked up their pace and he was gasping softly, barely having the foresight to pop his paci in his mouth lest he start moaning.
his frantic attempts at self pleasure however did NOT go unnoticed but he was too far in his own world, recalling everything that had happened and the feelings that had followed to hear the rapid footsteps coming up the stairs, only opening up his eyes and looking up as the door to his nursery was opened.
"Little man, It is NAP time, not FUN time!!" Sakura scolded, hands on her hips and shaking her head. "Now roll on your back and go to sleep, Next time I catch you being naughty I'll be coming back with Mr. paddle!"
The threat of a spanking with the dreaded paddle caused Li to make a mess in his diaper, though instead of the pleasure filled one he had been craving and hoping for, it was a smelly one that filled his bulky diaper with a muddy mess.  
sniffling and on his tummy still Li let the paci drop out of his mouth. 
"C-Can I have a diaper change please?" he asked, though he had a good feeling he already knew the answer. 
"Diaper changes are for good boys. maybe sleeping in a stinky diaper will curb your little humping urge." Sakura said and turned to leave, then turned back. "..Didn't I say I wanted you on your back?"
"But..but..the poopie!" Li sniffled. Seeing the look on her face Li whined and popped his paci back in for comfort even if it meant he'd have to suffer his own smell and with a squish he rolled onto his back, knowing that if he'd thought dropping off to sleep had been hard before, it was going to be almost impossible now.

The end, for now.