As you sit on the edge of your bed, staring at the screen in front of you, you can feel your heart racing with both excitement and nervousness. In front of you, your older sister is dancing in her room, unaware of your presence. She moves her body with such grace and fluidity, and you can't help but admire her beauty.

You've always had a crush on your sister, but you never dared to tell anyone, not even her. So, you've resorted to secretly watching her, finding any excuse to be near her. And now, as you watch her dance, you can feel yourself getting turned on.

Your hand reaches down to your pants, and you start to rub yourself through the fabric. You've never done this before, but the sight of your sister is too much to resist. You can feel yourself getting harder and harder, and you start to wonder what it would feel like to touch yourself without any barriers.

With shaking hands, you unbutton your pants and slip your hand inside. As you start to stroke yourself, your sister suddenly turns and catches you in the act. Your heart drops to your stomach, and you fear her reaction. But to your surprise, she doesn't look disgusted or angry. In fact, she smirks and continues dancing, giving you a sultry look.

Your heart starts to race even faster, and you can't believe what's happening. Your sister is watching you pleasure yourself, and she seems to be enjoying it just as much as you are. With her seductive movements and teasing glances, she pushes you further and further to the edge.

As you reach your climax, you let out a moan, and your sister stops dancing. She walks over to you and whispers, 'welcome to the club.' And with those words, you know that this will not be your last experience of self-pleasure while watching your sister.