One day in a little house within Mobius, a little lilac-coloured hedgehoglet giggles as an older male tickles her tummy. The male chuckles as he continues to tickle her. He soon lifts the hedgehoglet's t-shirt before blowing a raspberry on her tummy.

"Cootchi coo, who's a widdle cutie pie~?"

The little hedgehoglet squeals and kicks her feet. The older male, who was named Sonic, chuckles again before giving his daughter a kiss on her tummy and pulling her shirt back down. 

"Gagee~"

Sonic kneels down beside her and points to his mouth, smiling down at her.

"Kazu? Can you say 'daddy'? Like... 'da-dee'?"

The little girl looks up at her father before cooing in a confused way. She then smiles and points at Sonic as she speaks.

"Da... da... dagee!"

Sonic smiles and claps his hands.

"Good girl, you almost got it!"

Kazu gurgles and smiles up at Sonic whilst attempting to put her fist into her mouth. Sonic smiles and chuckles and from her display.

"Aww... you're so adorable, aren't ya?"

"Ba!"

Sonic soon makes a curious expression as a smell fills his nostrils. He looks down at Kazu and picks her up before sniffing her. He groans and makes a disgusted expression.

"Phewie, princess! What's mummy been feeding ya, eh?"

The little hedgehoglet soon quivers her lip and blushes a little as she looks up at Sonic. Sonic lowers his ears and watches as Kazu starts to sniffle. He gently lays her down on the ground before pulling a changing mat over to him and placing her onto it. 

Kazu soon clenches her fists and lets out a loud and forceful cry.

Sonic makes a sympathetic expression before gently running a finger along her cheek. The little hedgehoglet soon sniffles and calms down a little as she looks up at her father and gently grips onto his finger with her tiny hand. 

"Shh... it's ok, princess. Daddy will take care of that yucky diaper for ya."

Kazu soon sniffles again and sucks her thumb as she watches Sonic start to remove her diaper. He soon winces as he sees the amount of poo that she had produced.

"Ugh... that's a lot of stinky, sweetheart."

Kazu looks away, shyly. Sonic soon chuckles from her shyness and proceeds to clean up her bottom with a baby wipe. The baby hedgehoglet coos as her father wipes her and sticks out her tongue in a cute way.

Sonic chuckles as he puts Kazu's diaper and wipe into a bag.

"You're being very cheeky sticking out your tongue like that..."

The little hedgehoglet soon starts to blow raspberries with her tongue and smiles up at Sonic as she does it. Sonic soon smirks and then blows a raspberry back at her. Kazu squeals happily and claps her hands.

"Who's a silly little princess~?"

Kazu giggles and points at herself.

"Ba?"

"That's right, YOU are!"

Kazu coos as Sonic picks up another wipe and watches as he starts to clean up her foo-foo. The blue blur blushes a little from cleaning up his daughter's 'area' but continues to do so before putting the wipe into a bag.

"There you go, sweetie... your foo-foo and bottom are both clean."

Sonic picks up a new diaper but soon looks down as he notices the little hedgehoglet smiling in a cheeky way. He gives her a curious expression but then gasps as he notices a small stream of urine shoot out of Kazu's foo-foo.

"Whoa! Watch out for daddy's hand, Kazu!"

The little hedgehoglet simply giggles as she continues to urinate, eventually getting her pee all over Sonic's hand. The blue blur sighs a little as he uses his already urine-covered hand to cover Kazu's foo-foo. He smirks a little as he notices his daughter's smug expression.

"You look quite proud of yourself, sweetie..."

Kazu giggles and claps her hands as she looks down at her urinating foo-foo. Sonic winces from the warm and wet feeling of his daughter's urine stream hitting his hand. He soon chuckles a little and watches as Kazu's stream dies down before eventually dripping onto the changing mat. 

The blue blur notices and grabs a baby wipe before using it to clean up his hand. He then puts it into the bag and points at Kazu's foo-foo.

"Finished now, sweetheart?" 

The little hedgehoglet smiles cutely and Sonic nods before grabbing another baby wipe. He cleans up her foo-foo and puts it into the bag before putting a new diaper onto her and picking her up. Kazu coos and reaches out her hand. She gently grabs Sonic's nose and giggles as her father kisses her cheek.

"There you go princess, no more wee-wee or poo!"

Kazu coos happily and claps her hands as Sonic lays her back down onto her playmat. The young male chuckles and watches as Kazu attempts to grab a hanging toy above her, which was in the shape of a ring.

"It's no wonder you went for that one..."

Kazu gives Sonic a toothy grin and soon tries to chew on the toy.

Unbeknownst to Sonic and Kazu, a little toddler was standing in the doorway and peeking inside. This little boy was Sonic's 2 year old son, Samuel.

"D-daddy?"

Sonic soon feels his ear twitch from the voice and turns around before smiling back at the toddler, who was shyly hiding behind the wall.

"Hey Sammy, what's up?"

The little boy soon emerges from behind the wall and walks over with his hands behind his back and a blush on his muzzle.

"Me need diapy change..."

Sonic smiles and gently brings him into a cuddle.

"Aww... well you've come to the right place, little man! I was just changing your little sister."

Samuel holds his nose with his thumb and finger.

"Me thought me cwould smell something yucky..."

Sonic chuckles and ruffles Samuel's hair before standing up and picking up the bag with Kazu's old diaper and dirty wipes inside.

"Don't worry, little man... I'll get rid of it. Keep an eye on your sister while I'm gone, ok? I won't be long."

Samuel sighs a little and watches as Sonic goes out of the back door. The reason why Samuel wasn't very happy about watching over Kazu was because he was the jealous type and was always a bit envious of his sister getting a lot of attention.

Kazu looks up at her older brother and coos whilst giving him a curious expression. Samuel looks down at her curiously too. Soon Kazu starts to try and chew on her foot and Samuel smiles a little.

"Me guess you are kinda cute... "

Samuel soon gives her another curious look as she reaches for his nose. She soon grabs onto it and starts to pull it. Samuel winces in pain and tries to pull his nose away from her.

"Ow! Quit it, that hwurts!"

Unfortunately, Kazu didn't understand what was going on so she continues to pull on his nose, pulling harder and harder. Samuel soon starts to cry loudly, hoping that someone would come to his aid.

At that moment, Sonic enters through the back door again and gasps before running over and gently pulling Kazu's hands away from Samuel's nose. Kazu soon realises what had happened and lets out a forceful cry. Samuel also continues to cry and hold onto his nose.

Sonic kneels down and gently wraps an arm around Samuel's shoulder as well as using his other hand to rub Kazu's ear.

"Shh... it's ok, little ones."

The three hedgehogs all look up as a purple-furred hedgehog, named Kira, runs in and gasps.

"What on Mobius is going on here?!"

Sonic looks up at her, nervously.

"Well... I just went out to get rid of Kazu's diaper and they were crying when I came back..."

Samuel sniffles and points to Kazu.

"K-Kazu was pwulling on my nwose, mama... it weally hwurt!"

Kira gives a sympathetic look and kneels down before picking up Kazu and rubbing her back, attempting to calm her down. She then gently rubs a hand against Samuel's muzzle.

"I'm sure she didn't mean to, sweetheart... she's only a baby after all."

Kazu soon calms down and holds onto her mother's shoulder as she rubs her back.

"There there, sweetheart..."

Kira looks over to Samuel and gently kisses his nose before standing up.

"Don't worry, honey, mummy's kiss will make it better. But I'll get her out of your way, ok?"

Samuel sniffles and nods before rubbing his eyes with his hands.

"Owk, mama..."