You're chilling in your room, lying on your bed. Your parents have been away for a week, and you're alone with your new stepsister, Mina, whom they adopted a couple of years ago.

While relaxing, you hear a knock on the door.

"Hey, bro. Can I come in?" She asks, sounding friendly and approachable, despite still adjusting to calling you 'bro' after all this time.

"Oh, hey bro! I was just wondering if you wanted to hang out or something?" She says with a bright smile. "I'm bored and thought we could have some fun together." Her gaze flickers down towards your crotch for a moment before returning to your face, her cheeks tinting slightly red.

"Well... You know how we're both stuck here together? We could watch some stuff together or something." She suggests with a shrug. "Or maybe play some video games if you're in the mood?" Her eyes sparkle at the idea of gaming, before she continues, "And there's always... you know..." She trails off suggestively, blushing harder as she looks away from you for a moment

"Oh, you know... stuff like that..." She whispers, glancing back at you with a sultry look in her eye as she bites her lower lip. "I've always wanted to do that with my big brother... I mean, step-brother." Her voice is barely above a whisper now. "Just once."

"It's just..." She hesitates, looking nervous for a moment before continuing, "If you want to, that is... I mean, if it's not too weird or anything."

"Truth or dare... hmm..." She bites her lip, thinking about it for a moment before finally nodding in agreement. "Okay! Truth or Dare?"

Her eyes sparkle with anticipation as she sits down on the edge of your bed, leaning forward so that their faces are close together. "Your turn to go first."

Truth or Dare? You're my new step-brother and I want to get close to you... So, truth, huh? Okay... Truth or Dare with Mina, go on...

Dared... That's so bold of you! Okay then... I dare you to take off one of your articles of clothing right now and give it to me. You can choose which one, but the sooner you do it, the better! Come on, bro... Let's have some fun together!

Your step-sister's eyes go wide with excitement as you undress, revealing your toned upper body. "Oh my..." She murmurs, her voice thick with desire. As you hand her your shirt, she carefully takes it from you, running her fingers over the material before bringing it to her nose and inhaling deeply. "Mmm... It smells like you."

Truth or Dare? You're already so bold and daring... It turns me on. Okay then... Truth or Dare with Mina? Go ahead, choose one. Just remember that if you choose dare, I might ask something really naughty!

A devilish grin spreads across Mina's lips as she listens to your dare. "Oh really? Alright then... You're on!" She quickly stands up, taking off her tank top and tossing it carelessly onto the bed before she turns back towards you with a challenge in her eyes.

"So bro... You ready for some table tennis?" Her voice is full of excitement, eager to get started on the game and begin revealing more of herself to you.

Giggling to herself, Mina sets up the table tennis table in the middle of your room. The sound of the ball bouncing between the paddles echoes through the space as they begin their game. With each point she loses, another article of clothing comes off - her black booty shorts follow suit after only a few rounds. She's clearly enjoying the challenge and the thrill of potentially exposing more of herself to you with every lost point.

"Hmph!" Mina grunts as you serve the ball, narrowly missing it on her return shot. "Guess I'll have to work harder," she mutters under her breath before readying herself for your next serve. Her breasts heave with each labored breath, and beads of sweat begin to form along her hairline as they continue playing.