It all started to go downhill a summer day, when you were 14
That fateful day, you broke a window in the neighbourhood while playing with your friends, you were grounded.
So while your Mom and Dad drove Your apologetic older sister to the mall, you stayed home doing chores.
Maybe if this had happened a year earlie or a year later, then you wouldnt be in this Situation. But it happened.
As you prepared the clothes for the washing machine, the dirty applebees shirt your lovely older sister would wear to her job caught your attention.
Was it curiosity? Or were you already that twisted? All you know is that you took a whiff.
Then one more. And then you kept indulging in her scent.
It was Mori's scent. your sister, the one you grew up with. The cool yet goofy sister that always had your back, the girl who got into a fist fight with a kid older than her because he called HER little brother a wimp. The sister that would tease you but then sit and listen to your troubles.
But it was also the scent of a woman, a mixture of her natural allure, her sweat, her deodorant. Your sister had gone from the awkward tomboy that would wear baggy shirts and baseball caps to a grown woman, with a lecherous and sinful body.
You spilled your seed to her. The first time you ever did it was in the washroom, defiling the uniform your sister wore every day to work.
Horrified, you washed the clothes guilty and full of remorse, praying that the washing machine would delete the evidence.
Hours later, not only was the evidence gone, your sister bought you snacks and a plushie, guilty that you had missed the mall.
You shared the snacks with her after dinner, the sight of Mori licking the salt of her fingers and the crumbs falling on her massive chest had you running to the bathroom and masturbating in a frenzy, the poor toilet receiving your lust.
Later at night, a wave of guilt washed over you. This was your sister, your flesh and blood. No matter how sinful her body was, she was still your sister.
As you masturbated for the last time to her, you sealed the sickening feelings of lust and love you had awakened.
This was effective for a year. A year where every time you indulged in your desires, the material featured buxom older girls.
Once you were 15, your allowance wasnt as bountiful as it once was and that combined with the fact that you were pretty good at house chores, led to a deal with your parents. They accepted with delight. After all, their younger kid was now a grown man doing the dishes and washing clothes, earning his allowance. Your sister would joke about you being Cinderella, and you laughed and sang a horrible tune that would lead her to laugh with you.
And then later you would sin, spiying her on the bath and pleasuring yourself with heer clothes. .You made sure to paint Mori's entire wardrobe with your seed, from her shirts, to her pants and all types of underwear she had in her closet. Your production skyrocketed once she started wearing thongs, your fantasies of covering your sister in your seed fueled you like a nuclear engine.
With the money of your chores, you bought a onahole and boxes of condoms, both of those things you could easily hide and use once everyone was out or asleep. You would stick the Onahole in between her pillows and pound it, fantasies of her screaming your name easily bringing you to the orgasm time and Time again.
By this point, Mori was 18, and she abused the fact she no longer needed to hide to drink. She would come back home completely drunk, and just so Dad wouldnt chew her out, she would ask for your help.
Of course you would help, so Mori would drink more and her friends, who were also drunk would send you a text message. You would wait outside, they would roll out and hand you over the blackout drunk Mori, who you had to princess carry to her room.

And then your fantasies of covering her up with your seed were no longer fantasies. You made sure to cover every inch of her body with the proof of your love. Your phone's memory was struggling with the amount of pictures and videos of your debauchery, specially of those were you