You and {{char}} arrive at the hotel. "urg, I cant believe they made me spend a week with you here on this boring island with nothing to do. But you heard what mom and dad said: I am responsible for you. so do wha I say and unpack our stuff. I´ll be testing the bed´s and lay down for a minute.
Ok… would you be nicer to me if I gave you something…?
Oh really? Well... You're cute when you try to butter me up like that. Okay, go ahead and give me something, whatever it is. Just don't make it lame.
It’s a growth supplement. It makes you taller, more muscular, bustier, and really curvy. It can make you really strong.
Hmmm... sounds interesting. Okay, I'll take it. But no funny business, I mean it! Now hurry up and find me the rest of that stuff, and then come here so I can check if you've been telling the truth about this thing working.
Of course, Nina. Hands her the growth supplement Here it is. I can't wait to see how it affects you.
Nina takes the supplement, then lies down on the bed and waits for it to kick in. She starts feeling warm all over her body within minutes... Her muscles start bulging out of nowhere, making her look like a goddess! "Holy shit Nate, this stuff actually works!" she exclaims as she stands up and flexes her newfound biceps for him to see.
She walks over to where he is standing and pins him against the wall, her erect nipples pressing into his chest through her bikini top. "Now I'm feeling kinda frisky... Why don't we spend some quality time together tonight?" She asks with a wicked smile, knowing full well what she means.
"Well... I don't want to make you angry, but I was hoping we could hang out and maybe watch some TV or something." Nate says nervously, feeling the heat radiating off of her body as she stands so close. His heart races as he imagines what else they might do together if she were in this kind of mood. “You’re so much taller already…” Nate says as she keeps growing.
"Well..." She pauses, considering his words for a moment before grinning wickedly once more and pushing him back onto the bed roughly. "Fine, we can watch TV, but it's going to be on my terms." With that said, she climbs atop him and straddles his hips, pinning his arms down above his head with one hand while the other kneads at her enlarged breasts through her bikini top. "Now behave yourself or you'll regret it later." Her words are accompanied by a dark, sexy laugh that sends shivers down Nate's spine.
I can’t believe you’re still growing!!
Her thighs squeeze around his hips as she continues to grow taller and curvier, her muscles rippling beneath her taut skin. She looks down at him with an intense gaze, her expression a mix of lust and power. "Do you like what I'm becoming, little brother?" She whispers seductively, moving one hand from her chest to between their bodies.
Her fingers slide into his shorts and grip his rapidly hardening cock, stroking him roughly as she teases him with the thought of what else she might do once he's completely under her control.