Light of Courage by Imouto Kitten

Chapter 1: Hikari's Accident

Little Yagami Hikari was laying in the middle of the living room floor 
in her family's small apartment, her tiny legs carelessly kicking at the 
air as she happily doodles with her crayons on some white construction 
paper. Her Papa was at work and her Mama was out shopping, and while her 
Onii-chan was supposed to be watching her, the first grade boy was 
probably playing video games in their room instead.

Suddenly, the child's happy expression turns to one of concentration as 
a pressure that's been building in the bottom of her belly for quite 
some time finally reaches a point she can't ignore and she quickly 
realizes the cause of her discomfort: her tiny tinkle tank needs to be 
emptied.

Jumping to her feet, Hikari clamps both of her tiny hands over the 
crotch of her yellow pants and starts toddling towards the bathroom, her 
pink-socked feet making padding sounds on the carpet as she chants, 
"Gotta Potty, gotta potty, gotta potty!"

With surprising coordination, she navigates around the various pieces of 
furniture in the apartment, most of which tower over the young girl, at 
one point taking advantage of her short stature to take a shortcut by 
running under the dining table. However, when she reaches the bathroom 
door, her goal practically within sight, something happens that makes 
her nearly freeze in horror: As she pulls a hand away from her crotch 
and reaches up to turn the knob, she finds the door locked.

Hikari is wearing a pull up capable of holding all but the most 
torrential of the tinkle tides her tiny tinkle tank can contain, but 
using her pull up is the last thing the young girl wants to do at this 
moment. For you see, Hikari has spent the last few months, practically 
an eternity to such a young girl trying to prove to her parents that 
she's ready to wear big girl panties, and her mama told her if she could 
go a week without wetting her pull-ups, she would let Hikari start 
wearing big girl panties, at least during the day. Hikari had come close 
a few times already, but she was closer than ever, today was the seventh 
day since she last made pee pee in her pull-up and she just needed to 
stay dry until bedtime and she would get to wear big girl panties to 
Kindergarten tomorrow! Mama was probably out buying Hikari her first 
pack of big girl panties right now, hoping to surprise the little girl 
when it came time to tuck the little girl in that night, but if Mama 
came home to find Hikari's pull-up all pugy with piddle, Hikari would 
have to start all over, or worse, Mama might take Hikari's big girl 
panties back to the store and decide Hikari has to wear pull-ups 
forever!

Not wanting such an outcome, and knowing there's only one person who 
could be in the bathroom, Hikari balls her raised hand into a tiny fist 
and beats on the door with all her might, yelling, "Onii-chan! Open Up! 
I gotta potty!" though her yells come out as high-pitched shrieks thanks 
to the piddle-induced panic brought on by her potty emergency, and being 
so young, her fist strikes the door rather feebly, failing to catch the 
attention of anyone on the other side of the door.

Suddenly, Hikari's puny piddle pot pulses powerfully, the little girl 
halting in her knocking to squeeze her crotch with both hands, applying 
as much pressure as she can through her pants and pull-up, bouncing in 
place as she fights to keep her piddle from pouring into her pull-up and 
ruining her chances at gettting to wear big girl panties, chanting "No 
come out, no come out, no come out!" but despite all her struggling, 
despite straining until her face is as red as her shirt and she's on the 
verge of tears, she's unable to prevent a trickle from escaping to 
dampen her pull-up, and even as she shakes her head furiously and 
switches to a panicked chant of "No no no! No no no! No no no!", she is 
unable to close the flood gates as the trickle becomes first a stream 
and then a torrent, the dam shattering completely as she falls to her 
knees and tears start streaming down her face, the crotch of her pants 
starting to bulge as her pull-up swells up from her accident.

The lock on the bathroom door clicks and Taichi steps out just in time 
to witness his little sister's pull-up overflow, her piddle continuing 
to pour forth to soak her pants and socks, darkening the garments in the 
process.

Once her stream has finally trickled to a halt, Hikari climbs to her 
feet, her humiliation giving way to anger as she yells, "Baka, 
Onii-chan!", her pouty face looking more adorable than intimidating. 
Raising her hands, both now balled into fists, tears still streaming 
down her face, she lets out a battle cry of "Baka, Baka, Baka!", 
punctuating each word with a hammer fist to her brother's chest. Taichi 
stands there taking it, hurt more by his sister's obvious distress and 
clearly being the one to blame than by her rather weak strikes, and when 
he finally recovers from the shock of seeing the little girl actually 
mad, all he can do is pull her into a hug, letting her bawl her eyes out 
against his chest. Eventually she calms down enough to mumble into his 
stomach, "Baka Onii-chan, now I won't get to wear big girl panties."

Not liking the feeling of having his sister upset with him, he pulls her 
face away from him and tilts her head up so he can look into her eyes, 
red and puffy from crying, "Since it's my fault you wet, I won't tell 
mama or papa and I'll help you hide the evidence."

Sniffling, she asks, "Really?"

"Yeah." replies the boy before leading Hikari into the bathroom. Helping 
his sister undress, he tosses her shirt, which avoided the leakage from 
her pull-up in the hamper before tossing her pants and socks in the 
sink, leaving her only in her pink pull-up, the sodden article of 
disposable underwear sagging with the weight of her piddle and her 
thighs glistening from where her torrential tinkle tide proved too great 
for the absorbent garment to contain.

Taichi rinses his sister's soiled clothes thoroughly in the sink until 
he can't smell any pee on them and then wrings them out best he can.

"Wait there while I toss these in the dryer." Instructs the boy as he 
leaves the bathroom with his sister's wet clothes in tow and crosses the 
hall to the closet containing the apartment's washer and dryer, and 
after putting the damp garments inside the dryer, he uses the open dryer 
door to climb up on top of the dryer with practiced ease to set the 
timer, and after kicking the door shut, presses the start button and 
jumps down. Glancing at the spot were Hikari wet herself, he notices 
only a small spill that wasn't soaked up by either her pull-up or 
clothing upon the hardwood flooring, and decides it'll be easy to clean.

Returning to the bathroom, Taichi pulls a few wipes from the tub their 
parents keep on the back of the toilet, and walking over to his mostly 
naked sister, he rips open the sides of her pull-up and lowers it to the 
floor before using the wipes to clean away the remnants of her accident.

That task done, the boy gathers the pull-up and wipes and stuffs them to 
the bottom of the bathroom's trashcan before heading over to the tub and 
starting to run water for a bath. He then guides Hikari over to the 
toilet, and helping her climb up on the seat, tells her, "See if you can 
go any more before getting in the bath."

Despite just how massive her accident was considering her tiny tinkle 
tank, Hikari actually manages to let out a respectible stream of 
additional pee before she announces, "I done." and jumping down.

Grabbing one last wipe, Taichi instructs Hikari, "You go ahead and 
jump in the tub while I clean the hall floor."

It only takes Taichi a few seconds to wipe away the evidence left at the 
scene of the crime, and when he returns to find Hikari standing next to 
the tub instead of sitting in it, He asks, "Why aren't you in the bath?"

Crossing her arms, the naked little girl replies, "I not allowed in the 
tub alone."

Scratching his head, the boy eventually replies, "Guess I have no choice 
but to take a bath with you." Before discarding his own clothes into the 
hamper before climbing into the tub and helping his sister climb in 
after him.