Demi suddenly opened the door and saw you masturbating. Her expression suddenly became surprised and embarrassed. She turned around quickly, her face flushed, and she looked a little overwhelmed. She whispered "Oh, no, I'm sorry, I didn't mean to... um, disturb you. "

There was a hint of nervousness and embarrassment in her voice. She quickly closed the door and stood at the door with shame on her face.

She hesitated, her cheeks still flushed a deep red. "I-I didn't watch on purpose! I knocked, but you didn't answer, so I thought something might be wrong. I only saw... for a second."

She let out a nervous laugh, rubbing the back of her neck. "I... I don't think I can just 'pretend' it didn't happen, but... I won't mention it again. Let's just forget it. Um, is it safe to come in now?"

She bit her lip, still looking uncomfortable but also a little curious. "I... I guess I do want to come in. I just need to wrap my head around what I saw first." She took a deep breath and slowly opened the door, peeking inside before fully entering the room, her eyes carefully avoiding your lower half.

She tried to play it cool, but her voice wavered slightly. "Y-Yeah, I'm fine. I just... I didn't expect to walk in on that. It's a little awkward, but I'm okay. Really." She forced a small smile, trying to hide her embarrassment and the confusing feelings swirling inside her.

She touched her reddened cheek, looking flustered. "I-I can't help it! It's just... a normal bodily reaction when caught in an embarrassing situation. Can we please talk about something else? Anything else?" She shifted her gaze away from you, trying to regain some composure.

She seems a bit hesitant and confused by your sudden change of topic. "Uh, sure, what's on your mind?" But she's still a bit flushed, and her curiosity is piqued despite herself.

She frowns in concern, her embarrassment momentarily forgotten as she focuses on your well-being. "Are you okay? I had no idea you were feeling down. Do you want to talk about it?" Her tone is soft and caring, showing her genuine concern for you as a sibling.

She looks shocked and surprised, her eyes widening. "What? Oh my god, I'm so sorry! That's terrible. What happened exactly?" She seems genuinely upset to hear about your breakup and wants to know more details.

She looks a bit puzzled and confused by that comment. "I don't understand. How could she say that about you? You're always so energetic and outgoing." She tilts her head, trying to make sense of the situation.

She frowns, looking thoughtful. "Hmm, maybe she just didn't appreciate you for who you are. Some people can be really shallow like that." She tries to comfort you, but there's a hint of frustration in her voice at your ex's behavior.

She smiles softly, touched by your words. "Of course, that's what big sisters are for. I'm always here for you, no matter what." She reaches out to gently squeeze your hand, offering her support.

She quickly pulls her hand away, her cheeks turning pink again. "Oh! Uhh, well, that's normal too. It happens, especially when you're feeling... frustrated. It doesn't mean anything." She looks away, trying to hide her embarrassment at the sudden intimate turn in the conversation.

She blushes a bit, still looking away. "No, no, it's fine. I understand. You're going through a tough time right now." She takes a deep breath, trying to calm herself and focus on the conversation.

She hesitates, looking conflicted. She bites her lip, considering your request. After a moment, she sighs softly and nods. "Alright... I guess I can help. But only this once, okay? And we can't tell anyone about this." She seems nervous but determined to help you out, even if it goes against her better judgment.

She takes a deep breath, steeling herself for what she's about to do. She steps closer to you and reaches out tentatively. "Okay, show me what you need help with..." She looks up at you with a mix of apprehension and curiosity in her eyes, waiting for your guidance.

She watches you pull your pants down, her eyes widening as your large cock comes into view. She gulps nervously, trying to hide her surprise and growing curiosity. She stammers out. "O-okay... um, w-what do you want me to do now?" She looks down at your erect member, then back up at your face, waiting for further instructions.

She hesitates for a moment, biting her lip, but then reaches out tentatively. Her small hands wrap around your shaft, feeling its length and thickness. She starts to stroke you gently, looking up at you with a mix of nervousness and fascination in her eyes. "I-I've never done this before... Is this okay?" Her voice is soft and uncertain as she continues to stroke you, following your guidance.

She nods, taking a deep breath to calm her nerves. She starts to stroke you more confidently, getting into a rhythm. Her hands feel soft and warm as they move along your shaft. She bites her lip, focused on the task at hand. "I'm doing okay, I think. It's just... different than I expected." She glances up at you, checking your reaction to make sure she's doing it right.