The first morning rays of sunlight filter through the blinds and cast a dim glow across Lily's bedroom. She lay asleep, face down and haphazardly strewn across the bed with sheets tangled around her legs. It was a peaceful morning in the Nagai household, save for the quiet sounds of Mrs. Nagai preparing breakfast in the kitchen below. The pale light slowly stirred Lily awake, faint moans escaped from her lips as she dribbled saliva onto the pillow beneath her head.
As her body roused a warm throbbing began to fill her abdomen and groin, growing stronger with each passing moment. Lily shifted uncomfortably, her aching little bottom squirmed around in the air trying to find some relief. She slept naked except for thin cotton panties that barely contained the bulge of her nighttime companion. Nestled comfortably within her stretched out anus was a large plastic water bottle. It had been a tight fit when she pushed it in last night, but it now fit pretty snug. Her muscles had loosened considerably overnight to make room for the intruder.
Lily squinted through the gloom as she slowly became aware of her surroundings. The alarm clock on her nightstand read 6:05 AM, its a school day. With a reluctant groan she clenched her cheeks and rolled onto her back. Her hands ran down her body, instinctively moving towards her crotch, feeling the slight bump in her abdomen as the bottle bulged outward. Her fingers found their way underneath the waistband of her damp panties and she traced along the rim of her swollen opening. Hours of being filled had left a warm and sticky residue coating her crotch and thighs.
Lily giggled quietly to herself, "Ooh~~... Stayed inside~", blushing at the sturdy mass between her cheeks. This wasn't unusual, she often fell asleep with something lodged inside her. Usually it was carrots and cucumbers, sometimes bouncy balls and other random things. Today though, it was the largest object yet - her school water bottle. She couldn't help but grin as she considered the size difference between her tiny frame and the monstrous thing buried in her anus. Careful to not dislodge the bottle, she wriggled out of her soiled panties and pushed them aside.
Lily noticed how comfortable the bottle felt nestled in her numbed rectum. She had slept with it only around 2/3rds of the way inside her since thats as far as it would go in last night, but after stretching herself out she thought it could probably be pushed in deeper. A mischievous glint entered her eye as she decided to give it a try. She pulled herself into a sitting position and put her weight down on the bottle.
Her guts tried to resist for a moment but gave suddenly as the bottle re-seated itself even deeper within her bowels. Lily squeaked quietly as she felt her insides give in, stretching and rearranging themselves around the bulky intruder. She rubbed her hand over her belly, massaging the protruding bulge of the bottle. The bottle shifted inside her as she wiggled her hips, "Almost... A bit more..." she whispered to herself.
With one final push she managed to force the entire length of the bottle inside, her eyes widened as the sudden pressure sent her over the edge. "Ooohhh~~!!" Lily moaned softly as her crotch and insides convulsed around the huge bottle, milking every drop of stimulation from it. A sticky mess of piss and cum sprayed forth from her helpless urethra and pussy, pouring freely down her inner thighs and wetting her sheets. Her toes curled as she savored the sensation, gripping the edges of the mattress for support. The bottles bulk pressed hard against her bladder with each spasm, the stream of piss gushed in fits and starts until finally subsiding into gentle trickling as her orgasm eased off.
Lily slowly lifted her sore bottom from the bottle, letting it slip out until only the tip remained inside, before suddenly dropping back down on it with all her weight. "Mmm!!" The bottle was forced back into her abused anus, her insides obediently stretching around its enormous shape. For several minutes she continued to thrust herself onto the bottle, all while the resistance of her hole gradually dwindled. Only after she was satisfied it was utterly defeated did she allow herself to cum again, desperately trying to muffle her moans and gasps as best she could.
Gradually Lily calmed down, her heartbeat slowed and breathing returned to normal. She gentle eased herself off the bottle, wincing slightly as she allowed the bottle to pop free from her swollen and tender hole. A thick string of anal juices trailed behind it as it emerged, leaving a slimy smear across her stomach as she brought the bottle closer to examine it. Her gaping asshole continued to ooze a steady stream of lubrication, dripping down her crotch and pooling on the bed.
The water bottle was covered in a thick mucus and was flecked with faint traces of blood where her delicate tissues had been damaged during her vigorous session. "Maybe...too far..." Lily considered, blushing profusely at the evidence of her perversion. Soon enough the throbbing of her aching hole began to settle in. She shifted over and shakily set down the bottle on her pillow, still trembling slightly from her intense orgasm. Eager to inspect the damage, she slowly struggled to her feet and shuffled over to the large mirror on the wall opposite her bed.
There before her was a young girl, no older than ten, precariously slouched in front of the mirror. Her short black hair was tousled and stuck to her forehead in sweaty strands. Faint dark circles underlined her eyes and a flush of arousal colored her cheeks. All that amounted of her breasts were the two budding pink nipples jutting out from her perfectly flat chest. Her petite frame had few curves to speak of aside from her little round butt. And covering her crotch and inner thighs was a sticky layer of fluids that dripped steadily downwards.
Though none of this interested Lily much right now. Instead she turned her bum towards the mirror and tentatively spread her cheeks apart, her sloppy ass readily opened up for inspection. No longer tight nor delicate, her anus was gaping and lewd, permanently expanded by countless hours spent stuffing herself full of objects too large for such a small body. The swollen and puffy pink hole contrasted sharply against the pale flesh surrounding it, while the smooth red tunnel within seemed wider and deeper than ever before. She watched as sticky dribbles of anal juices drooled constantly from the depths of her greedy rectum, still recovering from its recent torment.
Lily couldn't help but blush as she prodded and pulled at her engorged entrance, "S-so squishy.." she murmured softly to herself, "...and warm..." Her fist smoothly slipped in and out of her anus, gently stirring and kneading the slimy walls of her rectum. But her numbed anus didn't seem to respond, she pushed deeper in, all the way up to the elbow. But her hole was unimpressed by this minor invasion, accepting her puny arm with a silent indifference. With a resigned sigh Lily withdrew her arm and turned back to take stock of the situation.
Sticky juices covered most of her lower body, and her bed was drenched with piss and cum. "Oh..", reluctantly she got moving, grabbing her discarded panties and using them to wipe down the worst of the mess on her body before throwing them into the hamper. She pressed the slimy bottle into her pillow and rubbed it dry before setting it carefully next to her school bag. After a final scan for anything incriminating, Lily fetched her bath robe from its hook and wrapped it around her small sweating body, pulling it closed to hide her indecent state. She smiled sheepishly at the soaking mess she had made of her bed sheets, hoping her mom wont mind washing them again.
Gathering her composure, Lily checked herself one last time in the mirror. She was looking exhausted and still quite flustered. Her insides felt weird and her anus throbbed, it had a heavy and wet feeling, the loose entrance still ajar and leaking steadily. She absent-mindedly rubbed her hole through the robe as she thought about what to do next.
Downstairs she heard the familiar sound of her mother's humming as she washed dishes in the kitchen. Lily padded down the hall and paused outside the kitchen, listening intently for any sign of trouble. "Hm? Oh, good morning sweetie~" her mothers voice carried through the open door, Lily froze, "Something the matter dear?". Lily forgot the hallway was visible in the living room window reflection. She stepped into the doorway, "U-Uuh", Lily thought quickly, "S-Sorry mommy... I had a bad dream and pee... peed the bed... again..." she finished meekly.
"Aww, don't worry about it honey, accidents happen." Her mother said kindly, turning away from the sink to face Lily. "You don't need to apologize you know?" She reached out and ruffled Lily's hair affectionately, "You look dreadful! That must have been some scary dream you had."
"Y-yeah...", Lily nodded nervously. "Can I take a shower first? B-Before breakfast?"
"Of course sweetheart. I was about to shower myself, lets go get you cleaned up okay?"
Lily's face went red. "T-Together?... B-but mommy..." she stammered, panicking. Her hands reflexively reach behind her robe to cover her bottom.
"What's the matter dear? I've seen it all before. It seems like only yesterday you were just a little baby" Her mother laughed lightly.
"B-But mom...I-I'm not a baby anymore..." Lily protested weakly.
"Alright alright," her mother conceded, "You can use the guest bathroom if you want. And i'll keep your breakfast warm for you OK?" she added, kissing Lily on the head.
Relieved, Lily hurried off to the spare bathroom. Mrs. Nagai was confused and a bit concerned as she watching her daughters retreating form, a damp spot in her robe was clearly visible on her behind. Later, the sticky state of Lily's bed sheets raised further questions in her mind. Lily was up to something lewd, and the prospect made Mrs. Nagai feel somewhat... odd...