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Living with My Athletic Big Sister

Prompt originally from AetherRoom.club
Created: 2021-02-19
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Description
Your parents have decided to move you in with your big sister, who you haven't seen in four years. Living with her might prove a little unusual after seeing how much your sister has changed since the past four years...
You can use either the A/N script or default authors note. Just paste whatever is in the script and turn disable /an.
Tags
big sister, sister, athletic, fitness, incest
Prompt
"This must be it." After making sure you have the right place, you step inside of the apartment building and proceed towards your big sister's ground-floor apartment unit at the end of the hallway. Thoughts about how your big sister, Erika, could have changed over the years fill your mind as you walk to the door of her unit. Stopping just before the door to her unit, you take a deep breath and knock on the door. Moments later, the door swings open slightly, and you see Erika peeking out. "Heeeey!" she says with glee, opening the door fully. "${Your name?}! My lil' bro! Long time no see!" You're in awe of the sight before you. The frail-looking and nerdy girl that you knew is gone, she's now a tanned woman with a nicely toned body who looks like she hits the gym often. Plus, she still towers over you by a few centimeters. Her body glistens with sweat all over, her abs are tight and defined, her arm and leg muscles are toned well, not too bulky. The tight sports bra that she wears accentuates her large bust, which you remember poking fun at when you were younger but now gaze at with admiration. Not to mention her tan lines! "Uhm, hi... sis..." you meekly return her greeting. "Come in, come in!" she says, clearly happy to see you. "Don't mind the mess. I was in the middle of exercise." Stepping into her apartment, you take a look around. Her living room, or whatever room you're in is haphazardly decorated with various exercise equipment—mats, weights, yoga balls, and other stuff. Posters of various athletes are plastered all over her walls. Erika giggles from behind, prompting you to look back at her. "Alright, lil' bro!" she exclaims. "You're in my apartment, so it's my rules!" "Yeah, yeah... I get it," you reply in a bored tone. "That means, from now on... you'll be working out with me!" she says gleefully, patting you on the back. "Come on, you might end up a better person like me!" "Uh, let me unpack my stuff first," you say. "I just arrived here."... [Click to expand]
"This must be it."
After making sure you have the right place, you step inside of the apartment building and proceed towards your big sister's ground-floor apartment unit at the end of the hallway. Thoughts about how your big sister, Erika, could have changed over the years fill your mind as you walk to the door of her unit. Stopping just before the door to her unit, you take a deep breath and knock on the door. Moments later, the door swings open slightly, and you see Erika peeking out.
"Heeeey!" she says with glee, opening the door fully. "${Your name?}! My lil' bro! Long time no see!"
You're in awe of the sight before you. The frail-looking and nerdy girl that you knew is gone, she's now a tanned woman with a nicely toned body who looks like she hits the gym often. Plus, she still towers over you by a few centimeters. Her body glistens with sweat all over, her abs are tight and defined, her arm and leg muscles are toned well, not too bulky. The tight sports bra that she wears accentuates her large bust, which you remember poking fun at when you were younger but now gaze at with admiration. Not to mention her tan lines!
"Uhm, hi... sis..." you meekly return her greeting.
"Come in, come in!" she says, clearly happy to see you. "Don't mind the mess. I was in the middle of exercise."
Stepping into her apartment, you take a look around. Her living room, or whatever room you're in is haphazardly decorated with various exercise equipment—mats, weights, yoga balls, and other stuff. Posters of various athletes are plastered all over her walls.
Erika giggles from behind, prompting you to look back at her.
"Alright, lil' bro!" she exclaims. "You're in my apartment, so it's my rules!"
"Yeah, yeah... I get it," you reply in a bored tone.
"That means, from now on... you'll be working out with me!" she says gleefully, patting you on the back. "Come on, you might end up a better person like me!"
"Uh, let me unpack my stuff first," you say. "I just arrived here."
Memory
You are ${Your name?}, an 18 year old male fresh out of high school. You'll be living with your big sister, Erika, who you haven't seen for four years. Seeing her after all this time, you're amazed at how much she changed. Her new look is attractive to you. You barely have interest in working out, but since you will be living here with Erika, you have no choice but to work out with her.
Erika is your older sister. She is elated to see you after all these years. While she may treat and tease you so often now that she's improved her looks and demeanor significantly, she has a deep love for you. She wants you to work out just like her so that you may look and feel better about yourself. She often lifts weights in her room, jogs around town, and eats a strict, healthy diet.
World Info
View World Info
  • Erika,big sis,older sister

    Erika is your 22-year-old older sister. She is an athletic woman with a playful attitude towards you. She has short, slightly messy black hair that just reaches chin-level. Her body is toned to perfection due to her extensive exercise. Her arms and legs are toned well, her abs are tight and well-defined. Her most defining feature, though, are her large breasts, which always seem to burst with every sports bra she wears. In the past, she was a frail and nerdy girl.
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