Chapter Text
Little sister who's only 3 years younger.
Big brother learns how good it feels to touch himself and wants to make her feel good too.
He's watched mom and dad fucking when he was being extra sneaky.
It made him feel tingly when he watched dad put their private parts together and start humping.
So that's what he does to baby sis.
When he's 8 and she's 5, he slips his little cock in between her legs and fucks into her little virgin cunt until they're both cumming.
Little sister lets her brother go at it, closing her thighs around his dick while he helplessly ruts against her.
The two of them cum and cum until they're tired.
There's no mess, just heavy breathing and dopamine that they become addicted to.
The nightly ritual becomes something the two of them do any chance they get.
Being neglected by their parents since they're so well behaved has it's benefits.
One evening big brother copies dad again, putting his mouth on his sister's pussy and licking it until that thing happens like when they hump.
He does this so he can convince her to put his dick in her mouth.
He guides his little sister's head down, hand sliding into her soft hair.
He tells her "suck it" like he heard dad tell his mom.
His little sister sucks his stiff little cock like it's a pacifier or her thumb.
He sees stars as he moans, fucking into her mouth against each hard, inexperienced suck.
He cums a couple of minutes later, hand fisting in her hair.
They nearly get caught that time, but luckily he's still too young to actually cum yet.
As they get older, big brother's dick gets bigger and it stops being as easy to get off just from humping.
He looks on the internet and learns he's supposed to put something inside.
He remembers how he'd slipped inside her before on accident when it was smaller and it felt so good.
He starts to miss that feeling as he grabs at his growing hard-on through his shorts.
He wants to fuck her for real now, like a man would.
But she's so tiny and he hasn't even put a finger in her yet.