“Mom, I’m 18 years old” Levi grunted and rolled his eyes. “I know how the oven works” he laughed.

The past few days, Levi’s mother Claire made it a daily routine to prepare her son for the weeks ahead. It was the first time he chose not to come on the yearly summer trip to their apartment at the beach. And it made his mother nervous.

Today she made it a point that he wouldn’t just order takeout all the time, but to make his own meals. He tried to reason with her, but quickly resigned to hear all about the kitchen appliances. It was just quicker that way.

He wondered off in his own thoughts as his mom kept rambling about pots and pans. Levi smiled as he thought about this afternoon. The new spiderman was downloading on his ps5 and that was all he’d be doing from the minute they left for their trip, which was minutes away.

His train of thought was cut off when he heard footsteps behind him, followed by a laugh. “I think he knows how a fridge works mom” his sister Luna joked. Claire looked at her daughter with slight annoyance. She packed the fridge for almost a week worth of food and just wanted to make sure her son was eating well the first few days at least. “Claire are you almost ready, you know how your father is when he travels” she said.

Luna hopped on the counter and grabbed an apple. “Yup, he’s packing my bags now” she said as she took a huge bite of her apple. Her eating habits could use some work, but everyone in the family gave up on that. John looked at her with a smile and shook her head. He always appreciated her care-free attitude.

She grinned back as she looked at her brother. “Come on bro” she said between bites. “Just come with us, it’ll be fun!”. “Besides, who am I going to tease all day huh, mom?” she said giggling. Although it was true that she loved the activity to get under his skin, she was a bit sad he didn’t come along. But he made up is mind long ago. Now that he became 18 years old, he decided to finally have fun while his family was away. No nagging parents, no constant teasing from his older sister. Just playing video games, hang out with friends. Life!

“No” he smiled back at her. “But please be quite, mom is explaing very important stuff” which caused a grunt from his mother and she hung her head in defeat. “Fine!” she laughed, “but please take care of yourself ok?” and kissed him on his cheek.

Luna chuckled as she ate the last of her apple and clapped her hands together. “Suit yourself” she said as she hopped of the counter. “More room for me” she shrugged. One advantage was that she didn’t have to share the room with her brother all those days. Her mind trailed of about some of the “fun” stuff she was going to do there with no prying eyes from her younger sibling.

She wondered if her flung from last year would be there again as she felt excitement building up. “Maybe he wants to play” she wondered as she walked to the bathroom to fresh up before the trip.

Just then, her father entered the house. “All right guys, everything is packed” he said, a bit too proud. He was always stressed in the beginning of the holiday. He worked hard for his family, but that took his toll sometimes. But after a few days of relaxing he usually returned to his normal relaxed self.

“Let’s go ladies!” he shouted in the hallway and returned to his son. He took both his shoulders and looked him in the eye. “No funny business Levi” he said, with a glint of joy in his eye. He knew that he would certainly try something like a party. And it made him somewhat proud, he almost hoped he would.  “Yeah yeah dad, I know” he laughed as he noticed his father’s change of mood as they hugged.

After listening to some last minute tips he said goodbye to his mother as well, and finally they both left the house. Levi sighed, one more to go and then his weeks of freedom and joy would begin!

He waited by the front door until Luna got out of the toilet. He rolled his eyes as she looked at herself in the mirror to check herself out. He knew that she was aware that she’s a sight to behold. Her athletic body accompanied with her beautiful face was all his friends could talk about, much to his annoyance. He just saw her as his sister.

He knew she would get a lot of attention from the guys on holiday as well. But he felt sorry for some of them as he knew what some of their fates would be and shuddered at the thoughts.

He quickly shook his head to get those images out as she walked towards him with confidence and a big grin. “So bro, last chance! She said. “Sure you don’t want to come? I could sure use someone to bother while I’m being nagged by mom and dad?” she said hopefully. But she could see there was nothing she could do to get him to go with her. “Take care of yourself bro” she said as she pinched his cheek when she walked past him. “Don’t do anything stupid” she laughed as she stepped outside.

Just as he was about to close the door she peeked her head back in. “Oh, I hope you don’t mind if I erase some of your PS4 game?” she said and ran to the car with laughter. He opened his mouth to say something, almost falling for her empty threat, but chose not to and closed the door. He listened as the car drove away for their destination. He smiled as he remembered all those times he made that boring trip of eight hours. Slowly a smile crept on his face.

Emotions of joy overwhelmed him as he leaned back against the front door. The whole house to himself, nobody telling him what to do, only freedom that awaits. And with a big cheer he flung himself on the couch celebrating, and kicked his legs in the air with pure excitement.

He checked his phone and noticed Spiderman was finished downloading. But first thing first as he looked at the huge tv in the living room. His father loved to watch sports and bought this giant thing, much to the dismay of his wife. But he wouldn’t let him attach his ps5 to it and he was forced to play on his small tv in his own room. But the coming weeks would be different as he jumped from the couch and skipped some steps on the chairs to get to his room to grab his playstation.

He ran past his parents room, followed by the bathroom and was almost at his own room until he abruptly stopped, almost falling over. “What was that?” he whispered as his throat went dry. “Is that what I thought it was?” he thought.

Slowly he took a few steps backwards and stopped in front of his sister’s room. Her room was surprisingly clean, normally it was full of laundry and stuff scurried over the floor. But that was not what caught his attention. It was the white shining box in the middle of her desk.

He stood still for a few moments, thinking about what he should do. All the voices inside his head told him to ignore it, get his playstation and enjoy his free time. But something in him told him otherwise and as if his body had a mind of his own, he took the first step inside his sister’s bedroom.

Normally he didn’t spend much time in there. She was always listening to music he didn’t like, or texting her friends about stuff he didn’t care about. He noticed her room was much tidier then normal, his mother probably forced her to clean up her room before the holiday.

But that was not important right now as he stopped right in front of the box. To the normal eye it looked much like a shoebox or something. But he knew better, the box contained something far more exciting then his sister’s footwear. It was her shrinkbox!

Shrinking technology took a leap some years ago. At first it was used to reduce waste, make endless fields of tiny food until it was grown for consumption, but as with all technology it became more and more affordable until companies used it to make other products. And the shrink box was the ultimate product from last year.

The box contained a controller and receiver and was used to shrink people. They combined it with other techniques, making the tinies practically invulnerable and more. No need for food, no need for oxygen, alter body properties. It was nothing short of a miracle.

Sure enough, people began to experiment with it and soon people were using it on each other. Some became tiny as a way to save money, others wanted to become tiny as a way to bond. But soon enough, people were used as jewelry, footwear, piercing and naturally, sextoys.

The adult industry jumped right on it and invented creative toys that could be combined with tinies, or enhance their sexlife. Levi was to young the last years to really take an interest, but as he turned 18 things started to change, helped by some of the movies that he streamed online

Little did he know, someone in his house was already experimenting with tinies.

Levi remembered it like it was yesterday. It was a rainy Sunday afternoon and he was watching a movie together with Luna. That was something they enjoyed together and this time it was a good movie too. But he couldn’t quite concentrate because Luna was sucking on something with too much noise. He waited for her to swallow it, but after some minutes she was still sucking on it.

He stomped her softly on her shoulder, telling her to stop her smacking. She smiled at him with an innocent smile and shrugged, “sorry, can’t do” she replied she continued playing with something in her mouth and resumed watching the movie.

Levi frowned as he looked at her. “why not, just swallow it” he replied, but that only caused his sister to laugh. “Aah, no, let’s not do that” she smiled as giggled more to herself then to her brother.

After a few silent moments she looked at her brother from the corner of her eye with a smirk and knew that he wouldn’t let this go. She sighed. “fine” and looked at him suspiciously. She leaned and opened her mouth to show what she was sucking on.

Disgusted, he tried to push her away until he gasped as he saw what was on his sister’s wet tongue. In the middle of the pink flesh was a tiny shrunken man. The first he ever laid eyes on. “Wh.. how” he mumbled as a wave of hot air rushed over the man, caused by his captor’s giggling.. The tiny guy clearly looked like he was getting more than he bargained for.

And just like that Luna closed her mouth and resumed sucking on him like nothing happened. “Well, I got a shrinking box” she grinned, mumbling around the little man. “And he wanted to be shrunken”. “So yeah, that’s it”

Levi stayed silent for a while as he looked at Luna casually sucking on it. “H.. How” he said still looking for words. “Do mom and dad know”, which caused a strong reaction from his sister as she looked at him directly.

“Hell no!” she blurted out, and he felt sorry for the tiny man inside her mouth. “And don’t you say anything as well” as she pointed her finger on his chest and looked at him mischievously. “Because if you do you’re going in next” she said and resumed smiling at her brother. “Ha, that would be nice” as she looked back at the television in front of her.

“My little brother as my toy” she wondered. “Ha, now that would be hilarious” she laughed.

Levi decided to leave on that note. He needed some time to collect his thoughts. As casual and relax he could feign to be, he stood up and told her he was tired. Luna laughed as he got up, “what? Not interested”. She frowned as he was actually leaving. “Ah come on bro, I won’t do it, just watch the movie” as she tapped the seat next to her. But Levi thought it would be better to have some alone time. Just as he left the room she decided to tease him then. “Ok, just tell me you’re ready then bro!” as she giggled.

That night he lay awake in his bed, thinking about how it must been like for that guy, stuck in Luna’s mouth. And as the image of his sister slowly got replaced with a girl from the gym, he began to fantasize. He still remembered the thrill of the prospect to being dominated by sheer feminine power as he fell asleep.

He learned afterwards that the man agreed to be her shrunken plaything for a week with no restrictions. He could only guess what his sister did with him, but as it could be pretty much anything, it must have been quite a wild ride. He saw him a couple of times, she made it a sport to secretly show her brother what she was doing with him. Let’s just say he hoped nobody would ever throw him inside a running shoe before a 10k run.

Levi shook his head as he was thrown back in the present time. With clammy palms, he opened the box in front of him, carefully not to accidently damage it. She would immediately know he was the one that did it. Sure enough, there was the controller and the watch beside it. He seen it countless of times online, almost ready to buy it. But he never found the courage.

His mouth remained dry as he took the controller and turned it on. A loading screen appeared which slowly filled up to 100% percent. There was a cute logo of a tiny man under a giant thumb under the loading screen which made him smile. While he waited he took the box and put it on the pink bedspread of his sister and sat beside it.

Since the moment he discovered that tiny man on his sister’s tongue he wondered what it would be like. Not with his sister, but how it must feel to be so helpless. To be so easily dominated by a woman that can do with your tiny body whatever she feels like. As he fondled the watch in his hands he tried to make a mental image how disproportionate everything would be. Teeth the size of boulders, feet like houses.

As he thought about it, he felt a familiar feeling everything those imagines came into his mind, he grew excited. A slight bulge appeared in his pants as he thought about it and as the controller finished loading he decided on it. He felt a bit uncomfortable being horny in Luna’s room, but he was ready. He was going to try this out.

He browsed through the controller and quickly learned that it was possible to store multiple profiles. His eyes opened wide as he saw already 17 profiles in the database. “She shrunk that many guys already” he mumbled as he scrolled downwards until he saw a big plus at the bottom. “Add tiny”, it said and he pressed on it with his thumb nervously.

He filled in his name, he would erase it afterwards anyways, and the controller asked for the subject to put on the watch, which he did. He turned it on and luckily it didn’t need loading time at all. He knew from all his reading that it would shrink with him and that it was a way to communicate.

“Scanning subject” the controller said and suddenly he felt a weird tingling in his body. To his surprise, a few seconds later, he saw a 3d scan of his own body pop up on screen. It looked 99% like him, which gave him a laugh.

“Start shrinking session?” the controlled asked and his hand shook as he confirmed. He had to fill in the time of the session and the starting height. He thought about it for a minute and decided to go for 5 minutes and 1 inch tall. That would immediately give him a sense of how big everything will be and short enough that nothing bad could happen.

“Ready?” the controller asked as he filled everything in. “Shit, am I really going to do this?” he wondered out loud. He looked at his sister’s room. “And in Luna’s room?” he thought. After a few moments of silence he heard himself say. “Fuck it, let’s do it” and pressed the button surprisingly firm.

The tingly sensation returned as he felt something off with his body. Just as he was about to panic he felt his clothing become loose around his body and realized that it was happening. But also that he was going to be completely naked. Excited he decided to quickly undress and tossed his clothes below him. In a sudden bright moment he decided to stand on her bed so he could be near the controller as it grew in his hands and would soon be too big to carry.

After a few thrilling seconds he ended up at his final height and couldn’t believe what he saw.

He was on his sister’s bed with incredible distances of pink all around him. In the distance the shrinking box stood like a tower. And behind it, a distorted view of her girly room with familiar posters and other decorations. He fell to his knees from the absurd sensations. Incredible” he whispered.

He got back on his feet and carefully took a few steps on the now very strange feeling surface of her bed. But his fun was just starting when he heard an alarming sound. Screeching of tires in front of the house, followed by a car door opening and hurried footsteps towards the front door.

His blood ran cold as he listened carefully. “What is going on” he thought and for a moment he wondered if he misheard it, but sure enough the front door slammed open downstairs, followed by someone running up the stairs.. Straight towards him! “Shit!” he yelled and looked around him. The only thing on her bed was the shrinking box itself and quickly ran towards it. He looked at his watch while running and saw he still had 4 minutes left. “Shit!” he shouted again.

“Shit!” Luna said as she sprinted on the stairs. “How could I be so stupid!” she shouted as she ran past her parent’s bedroom. “How could I forget the shrinkbox” she thought for the millionth time as she begged her father to turn around to get something private from her room. Her father cursed as he finally turned the car around to get that ‘something’ that she doesn’t want to disclose, from her room.

She pushed her slightly closed door open and stepped into her room. She wondered briefly were Levi was, but she had more important matters and within a few steps she was at the desk. But no shrinking box.. “Wh..what?” she said as her desk was completely empty. “Where is..” and stopped talking when she turned around and noticed the box on her bed. She noticed Levi’s clothing on the floor and her wrinkled bedspread. “What the..” as she slowly walked towards it.

Levi still couldn’t find his breath. “No.. he thought, no she’s is way too big, no” he stammered as he saw her gigantic sister in her room. His mind couldn’t grasp that such big things, could move so fast. It was just so much raw power. “What is she doing here!” he thought as he panicked. “She can’t find me like this!”

He heard her approaching footsteps just as he reached the box. He leaned back at it and remained perfectly silent, suddenly aware how naked he is. “She can’t find me like this” he whimpered, but a huge shadow crept over the box and on the bedspread before him. Slowly he dared to look up and gasped as he saw her.

Above him, he stared at the surprised face of his colossal sister. Her eyes widened more and more and her open mouth slowly began to transform into a huge grin. “Levi?” she said with a voice of surprise. “Wh.. what are you doing?” she asked to the little man below her.

Luna couldn’t believe her eyes. Next to her shrinking box stood her tiny naked brother. Slowly a grin appeared on her face, realizing that he must have wanted to try it out. She opened her mouth to speak, but before the conversation even started they are both startled by their father’s angry voice from downstairs. “Luna!” he shouted. “come back now!”.

“Shit” she said as she looked towards her door. “Coming dad” she yelled back and giggled when she noticed her tiny brother cover his ears. Her mind reeled with the possibilities to mess with her shrunken brother, but there was no time.

Unless…. she thought and looked at her brother.

He saw her thinking what to do and he begged her to leave him alone, but knew from her face that she wasn’t going to listen to his reasoning. He could only hope that she would grow him back and never mention this again. But deep down he knew better.

He screamed and ducked as she grabbed something behind him. Her massive movements still new to him. When he dared to look again he saw that she was checking the controller. Her eyes scanned all the settings and suddenly she locked eyes with him, with the biggest smile he’s ever seen on her face.

“3 minutes left?” she said with a toothy grin. “More like 3 weeks” she laughed as she showed him the controller. He forced himself to look and above his body and just below his name was his timer. 21 September he read out loud and wondered what date that was, surely he didn’t put it in like that and it suddenly hit him. That is the day they return from their trip. “No!” he thought as he scurried away from her. She’s going to bring me along!” He realized.

“No Luna, you can’t do that!” he shouted as he fell on his back, but her fingers already encircled him. “Well Levi, that’s the beauty” she said sweetly, “I can” she laughed and gently picked him up.

“Luna!” her father shouted again. “One minute” she shouted back. She loved how her little brother felt in her hand. She thought about shrinking him before, but told herself to just focus on strangers. But if he’s going to give himself to her like this, she will make this most of it.

Luna ignored her brother’s pleas in her hands. “Where to put you” she wondered out loud. “Ooh, I’ve got just the thing!” and revealed a hidden drawer inside the box. Levi could pear between her fingers and noticed all kind if jewelry inside it. An impossible huge hand rummaged through the items until she found what she was looking for.

She sat on her bed for a moment and Levi heard it crack underneath her weight. Luna dropped him on her knee as she took the controller. “Don’t be scared, I’m just shrinking you a bit” she said with a smirk as she pressed a button. He trembled as the world grew more around him until he was an half inch tall or so. “Perfect” Luna said far above him.

He screamed again as something round was place next to him, smaller then him, and with her massive finger nail she opened a latch in front and somehow forced her brother in. He suddenly found himself in a golden round cage with only a small platform to sit on. After getting his orientation back he grabbed the bars holding him and suddenly heard the latch being closed again behind him. She trapped him!

Her fingers enclosed his silver cage and he saw her rummaging through her jewelry for a moment. “Come on, where is it” she said hurriedly, knowing her dad may storm in any second now. “Ah there it is”! She said as she grabbed some kind of metal pole. Levi screamed as she puts it underneath his platform. Luna carefully screwed the metal ball on the pole as she giggled at her brother’s discomfort.

“There, all done” and finally raised it to her eye. Levi never felt so small as he could only stare at his sister’s massive eye peering down on him. “Please Luna, stop!” he yelled, but he could tell there was nothing he could ever say to her that would make her do that. “Glad that you decided to join me in the end bro” her massive voice below him said to him.

“No, I..” but was cut off by his sister. “Now, enjoy the ride” she giggled and wondered what she meant. “Shit, what is this stupid cage anyway!” he yelled. “I thought since your first discovery, this would be an ideal start for both of us” as she lowered him a bit down her face until she stopped in front of her lips.

Suddenly her massive mouth opened in front of him and he knew what she meant. He screamed as he realizes she was going to put him in her mouth. Her moist breath already washed over him and he backed down his cage, but instead she brought him forward. “What is this thing?” he yelled as he shook the bars until he saw the pole going towards a tiny hole in the middle of her wet, pink tongue. “N.. noo” he whimpered as he realized what he was.

Luna loved his tiny yells inside her mouth as she secured her tongue ring. Nobody outside her mouth could hear, but if she concentrated enough she could hear the tiny inside her. The sheer dominance of her brother excited her as she screwed the little butterfly underneath her tongue. Satisfied she retracted her fingers.

Levi screamed as her fingers left him and he was finally alone in the slightly lid terrifying room. He was surrounded by white boulders that could crush him in a pulp and above him a scary wet ribbed roof. His feet made contact with the wet carpet below him and he didn’t dare to look behind him.

He redoubled his screams as he looked in front, past her sharp teeth. It was unreal as he saw the outstretched tongue of his sibling in front of him, slowly retracting inside her mouth. “Luna” he screamed one last time as suddenly her mouth slammed shut.

Luna smiled as she quickly got her things. She never felt so powerful, not even with other tinies. To have her own brother as her secret plaything for the next couple of weeks was something that excited her to her core. To dominate him with every simple movements, while their parents were there a devilish fantasy come true. This would be the best trip ever.

She shoved the box in a backpack from her closet and smiled to herself as she felt all the items inside move around, picturing her brother in them. Happy, she finally hopped out of her room.

Luna was met with disapproving sounds from her father down the stairs. But she couldn’t care less as she hopped outside and opened the trunk. It was packed with stuff, but in the left she found a spot. Carefully she closed the trunk over the backpack, making sure she didn’t break the box.

Satisfied she hopped in the backseat of the car and listened for a moment to her mother concerns. “It’s nothing mom” she said sweetly, “thank you for bringing me back, I owe you one” and leans in to kiss both her parents. She knew exactly how to treat them.

Levi could only try to keep his sanity inside her mouth while she moved down the stairs. With each step she made, he knew his freedom was father away. With each breath rolling over him, with still a lingering smile of her previous apple, a reminder what he’s in for. But that wasn’t even his biggest problem.

She kept her mouth relatively quiet, probably as a weird form of kindness to let him adjust to his new position. But her saliva didn’t care, slowly it crawled all over his tiny shrunken naked body and there was nothing he could do. He kept his eyes and mouth shut as he felt so humiliated covered in his sister’s spit.

But nothing could’ve prepared him from her talking. With every syllable he was thrown around her mouth effortlessly, an impossible rodeo on her tongue. But what was even worse, was the sight of the view of a happy family leaving for a long nice holiday. And him as a his perverted sister’s toy. He growled with anger as he realizes what was happening. Instead of having three weeks of freedom, he would be whatever Luna decided. He could swear he noticed a smug grin on her lips, before he was plunged back in darkness and wetness. “Stupid, stupid, stupid”  he screamed, angry at himself as her saliva replaced the air in his mouth.

---

Luna smiled as she laid her head back and played with her tongue ring, guiding him over her teeth and mouth, loving the thought that inside that metal ball her brother is stuck like her little prisoner. She felt her panties dampen but she hasn’t decided yet if she would use him like that. Simply dominating him could be enough, she’ll see.

After fifteen minutes or so, she felt a bit sleepy. She felt like playing with him more, but mentally shrugged, she has three more weeks anyway, a bit of sleep won’t hurt. She grabbed a sweater next to her and used it as a pillow and fell asleep in minutes, gently snoring as her father drove to their destination.

Nobody could hear the screams coming from the tiny inside her mouth, humiliated to his core on his sister’s tongue looking out her half open mouth as she snored around him.