"The Gleeful Mouse Balloon"
a The Great Mouse Detective fanfic by Inflationcouplingist

London 1897

It was a bit of a foggy night in London but all was quiet and not a single house light on...well except one, a very small one.

Down in a mice version of London, one house light was on. It belong to a toymaker named Hiram Flaversham of Flaversham Toys.

Hiram was busy working on a new invention that'll help his toy shop from going out of business, but more importantly he wanted to make sure his daughter wouldn't get sent to an orphanage if it failed.

"Father?" Hiram's daughter, Olivia Flaversham asked as she came in.

Hiram looked at his daughter and smiled, picking her up. "Hello Olivia." he greeted.

Olivia smiled as she hugged at her father before looking at what he was working on. "What is this father?' she asked curiously.

"Well, it's gonna be my greatest invention ever." Hiram told Olivia picking up a small pink pill. "This is my new inflation pill."

"An inflation pill?" Olivia asked as she looked at the pill in her father's hand. "You mean like a balloon?"

Hiram nodded. "This pill will inflate anyone into a big balloon but bounce like a rubber ball." he explained to Olivia.

Olivia looked at her father's new pill with awe.

"Of course this is a prototype." Hiram added. "The inflation will be permanent unlike the real one but I have yet to tested it to see if it does."

"No one wants to test it?" Olivia asked.

"I guess." Hiram said.

Olivia thought about the pill. "Father?" she asked pleadingly. "Can I test your new pill?"

Hiram was a bit awestrucked by what Olivia asked. "A-A-Are you sure?" he asked in nervousness. "If it is permanent, y-y-you won't..."

"Please father?" Olivia asked, giving her father the puppy dog looked.

Hiram was useless to resit the puppy dog look, especially from his daughter. "Alright Olivia, you can." he replied, caved.

Olivia smiled and hugged her father.

Hiram smiled and hugged her daughter back before setting her down onto the floor.

Olivia stood as she waited for her father to get ready.

Hiram gave Olivia the inflation pill prototype and a glass of water to drink it down, smiling but a bit nervous about the idea.

Olivia smiled as cute as she could at her father before putting the pill in her mouth and drinking down with the water.

Hiram watched his daughter waiting for the pill to take effect.

And it did...

Olivia noticed a bloating feeling coming from inside her and looked at her belly bulging with air and getting bigger. "Wow..." she said with glee as she gave her belly a poke. She felt that it was tight but also soft and un poppable.

"Wow indeed." Hiram replied as he poked his daughter's inflating belly.

Olivia giggled from her father's poke as her back and sides soon inflated and caught up to her belly, her blue shirt, blue skirt, and white cotton panties forming around her growing body comfortably. "Oooh father, I'm getting big!" she said with a smile as she rubbed her ever growing body.

"Why yes you are Olivia...I might need to move you into the other room so you won't get squished in here." Hiram told her inflating daughter.

"Oh okay father." Olivia said with a smile as she waddled herself to the door, growing bigger and rounder, her arms and legs inflating as she did. She managed to get through the door before she got too big to fit as she waddled into the human toy store her where her father's house was located.

Hiram followed her ballooning daughter into the human toy store, smiling as he examined her.

Olivia managed to turn herself to see her father as she grew and biggened, her blue shirt and dress and white panties and socks forming around her comfortably as her arms and legs started to sink into her growing body and her tail wagged from enjoying her lil inflation.

"I wonder how big you can get Olivia?" Hiram asked.

"I don't know father, but I'm getting really big!" Olivia replied, giggling as her pantied groin touched the floor, raising her feet in the process. Soon her head, hands, and feet were getting pulled in a bit, much to her enjoyment, as she grew and rounded. Suddenly, she stopped inflating and rocked gently on her groin, now a 10 foot balloon mouse girl.

"My my...guess my inflation pill works a lil too well." Hiram responded as he looked at his daughter with awe. "I might need to tweak it a bit."

"What do you mean father?!" Olivia asked smiling. "I feel so wonderful as a balloon!" She giggled as she rocked on her groin gently, loving her new balloony body.

"Well...I wasn't expecting you to be THIS big." Hiram said. "But at least you're enjoying it Olivia."

"Oh I am father!" Olivia replied as she showed her new balloony body to her father, giggling like the lil girl she is.

Hiram smiled and hugged her ballooned daughter from her panty area, feeling how tight and soft she'd became.

"Oh father." Olivia sighed as she was hugged.

"Of course, I will need to make a new room for your new balloon body Olivia." Hiram told her.  "And it will take a while."

"Oh I understand father." Olivia said. "I can enjoy my new body while I wait."

Suddenly, a giant shadowed figured peered through the window.

Hiram and Olivia noticed the figured and looked at it.

The figured looked to be a dog, a Basset Hound none the less. It entered and looked at Olivia, smiling and giving her a gentle lick.

Olivia giggled from the hound's lick. "Toby!" she said with glee.

Toby smiled as he looked and examined Olivia's new balloon form. Though to him she looked different she was still the same lil girl he visited to play with.

"Hello Toby." Hiram greeted to the playful Basset Hound.

Toby panted and licked Hiram as a greeting.

Hiram snickered a bit as he was licked.

Olivia giggled from the sight of that.

"Say Toby, would you like to play with a new Olivia balloon for a while?" Hiram asked.

"Oh can you Toby?!" Olivia asked. "Please?!"

Toby nodded with happiness.

Hiram smiled and patted Toby. "You be good now, okay Olivia?" he asked.

"Okay father." Olivia answered.

Hiram smiled as he went back inside the house preparing Olivia with her new room.

"So Toby, how would you play with a balloon mouse like me?" Olivia asked, smiling.

Toby gently nosed Olivia onto her rounded back as he looked at her happily.

Olivia giggled as she rocked on her back all round and helpless to do anything.

Toby soon gave Olivia a gentle push and rolled her over to one of his paws like a ball. He then pushed her with his other paw back to the first one, and vice versa.

"WHEEE!!!" Olivia giggled as she was rolled back and forth like the ball she is by the playful Toby.

Toby smiled cutely as he rolled Olivia back and forth before he stopped and grabbed her in his paws.

"Ooooohhhh...what are you gonna do now?" Olivia asked.

Toby lifted Olivia up before he letted the balloon mouse go and letting her bounce.

Olivia giggled as she was bounced, going a bit higher and higher past Toby.

Toby smiled and bounced Olivia playfully like a rubber ball.

Olivia giggled with joy and glee as Toby bounced her.

Toby soon settled Olivia from bouncing and grabbed onto her tail with his mouth, dangling the balloon mouse girl without hurting her.

Olivia squealed and giggled with joy and excitement as she was dangled from her tail by Toby.

Toby smiled cutely as he walked around carrying Olivia, giving the playful balloon mouse girl a bit of a ride.

Olivia giggled and bopped herself as she was dangled and getting a ride.

Toby soon settled Olivia down and rolled her back on her groin before laying himself down, grabbing and cuddling the balloon mouse.

Olivia smiled sweetly as she nuzzled the playful and kind Toby.

Toby smiled and nosed Olivia's small face gently.

Olivia giggled cutely a bit before giving Toby's nose a kiss and nuzzling him.

Hiram came in and looked at the sight before him, smiling. "Olivia." he said as he approached the two.

"Oh hello father." Olivia greeted with a smile.

Toby smiled and licked Hiram in greeting.

Hiram laughed a bit as he was licked. "I did managed to complete your new room and bed." he told Olivia.

"Oh thank you...*yawn*...father." Olivia replied, getting a bit sleepy.

Toby smiled and nuzzled Olivia a bit before letting her go.

"I'll see you tomorrow Toby." Olivia told him, waving one of her hands at him.

Toby smiled and nodded and licked Olivia before he left the toy store and went back to Baker Street.

Hiram smiled and grabbed Olivia from behind. "Let me roll you to bed dear." he said.

"Okay father." Olivia replied.

Hiram smiled as he tipped Olivia and rolled her head first towards their house, going through a bigger door he made from the other side and entering inside a lovely lil girl room with a pillow padded balloon bowl holder bed.

"It's so pretty, thank you father!" Olivia replied with glee.

Hiram smiled at her daughter's liking of her new room as he rolled Olivia into her new bed, setting her at an angle in the bed and covering her up with a blanket long enough to cover her. He then grabbed a glass of water and helped her drink.

Olivia smiled as she drank the glass of water to the end. "Goodnight father." she said.

Hiram smiled as he nose snuggled and petted Olivia. "Goodnight my precious balloon daughter." he said, kissing her goodnight before shutting the lights off and closing the door.

Olivia smiled as she nodded off into a deep, blissful, and happy sleep.

After that, Hiram remade his inflation pill a bit and sold them at his toy store, and it was a big hit. Everyone lil girl or boy wanted to try Hiram's Ball Pill, even if it was only temporary for a few hours, and the parents loved it as well. In fact, adults tried a pill out and enjoyed it and the majority of them were married couples.

Olivia got the only permanent pill and became a big ball forever, but she enjoyed living a life as a one and didn't care what people thought about her. Throughout her elementary, junior, high school, and college days, she was adored by every boy and envied by every girl. She didn't care however as long as she was happy...though there was one boy that caught her attention, a mouse that was smart and handsome, had the same feelings for her but was too shy to admit it, and wanted to be the next great mouse detective when he grew up...

His name was Thomas, nephew of his father's twin brother, Basil of Baker Street aka The Great Mouse Detective.

END