Chad White walks down the hall to his step sister Gia Derza’s bedroom, where she has just started taking off her clothes as she tries on an outfit while looking in the mirror. He watches voyeuristically through the partly open door to her room as he gets a perfect view of her undressing while turned partly towards him. She peels off her top to reveal her perky teen tits, and then takes off the lower half of her outfit to show off her firm butt-cheeks. The brother moves slightly forward, just enough to get a better view without being noticed, and his hand grips at the door-frame with anticipation.Gia pulls out an alternate clothing option and considers it for a moment. She tilts her head, pouting her face in doubt. To Chad’s delight, she twists around in place to consider it from different angles, flashing him even more skin in the process. Suddenly, Chad’s phone buzzes loudly with a received text message. Gia yelps in surprise and recoils, pulling the outfit she’s holding towards her to cover up as much of her bare skin as she can. ‘Chad, don’t watch me change!’ she whines. Her brother lies and says he didn’t know she was changing, he just wanted to come and apologize for being mean to her earlier. She relaxes a bit but still holds the clothes up to hide behind. Chad continues saying he doesn’t know what the big deal is, it’s not like she was naked. They see each other in bathing suits all the time whenever they go to the water slides. Gia relaxes and says she guesses that’s true. Chad sees the clothes that Gia has laid out on the bed and asks her if she wants a guy’s opinion on which ones are the nicest. With a sigh, she says ‘Sure.’She holds up the outfit she was considering and asks what he thinks about it. He pretends to consider it, and ultimately tells her that he’s not sure about it. Gia frowns and says yeah, her neither, and groans and tosses it back in a pile on the bed. Chad asks what the big fuss is about the clothes, why does she care so much? Isn’t she just going out with friends? Gia puts on a mischievous smile and says ok, don’t tell mom and dad, but she’s going on a date tonight. Chad is surprised and a bit disappointed – she has a date and didn’t tell him? Gia gets a bit hesitant and admits that he always gets jealous whenever she goes on dates. Chad can’t believe what he’s hearing and tells Gia that he’s not jealous, just protective of her. Fine, whatever, Gia says. There is a moment of silence between the two. So…is she going to have sex with her date?, Chad asks Gia out of the blueGia complains that this is exactly what she was talking about, he’s getting jealous again, and besides, that is NONE of his business. And even if the guy wanted to, she’s never even had sex before. Her brother is shocked to hear this – but she’s had plenty of boyfriends before! Gia replies sure, but she always took things slow in the past. But she admits that she is considering having sex with this new guy. Chad gets suddenly protective of her, she can’t just dive in like that, she doesn’t even know this guy. What if he hurts her, or expects her to do things she’s not comfortable with? Does she really want her first time to be with a complete stranger? Her first time should be with someone who she trusts. Gia gets even more self-conscious and says she doesn’t really have anyone in her life like that right now, all her other friends are pairing up or going off to college.Chad says… well, what if he showed her a thing or two? Gia reacts with shock, how can he even suggest that? She’s his sister! Chad says defensively that he’s just trying to look out for her, he cares about her and doesn’t want to see her get hurt. Besides, he rationalizes, technically they’re not related, so if it helps she could just think of him as her very good friend. Gia frowns and says it would just be too weird. Chad says it doesn’t have to be – he could just show her a couple of moves so that she’s not going in clueless. Like what? Gia asks incredulously. Chad tells her he could at least teach her how to give a proper handjob. That way if she’s ever with a guy and doesn’t want to take things further, that’s a great way to cool things off without making him feel blue-balled. Once a guy cums, he explains, he stops caring about sex for a while. Gia says that that still means she’d have to touch her brother’s… you know. Chad rationalizes that it’s just hands on skin, same as if she shook his hand or gave him a backrub. Gia admits that that DOES make it seem not so bad. Chad promises that he won’t make her do anything she’s not comfortable with, and Gia hesitantly agrees to try.Gia awkwardly helps her older brother out of his pants and kneels in front of him beside the bed. She grabs at his dick and starts awkwardly and roughly rubbing it, and he remarks that she has to be gentler to start, with slow long strokes. She follows his advice and starts to improve her technique, and before long, Gia is stroking her brother’s cock like an expert, as he moans and says it feels really good.After awhile, he remarks that most girls will use their mouths to lube up a guy’s dick during a handjob, making it feel even more pleasurable. ‘I’m not sucking your dick!’ Gia complains. Chad says that’s fine – some guys are even happy with a girl just kissing the shaft a few times. That wouldn’t be so weird, right? They’ve kissed on the cheek before, haven’t they? Hesitantly, his teen sister says yeah, she guesses so. Timidly, she brings her lips to the shaft of his dick and kisses. Chad moans loudly. Proud at seeing he likes her technique, Gia continues, giving him sensual kisses up and down his shaft. Her brother continues to moan, and puts his hand reassuringly on her head. This seems to encourage Gia to be a bit bolder. She sticks her tongue out and starts licking up the side of his shaft. Ohhhh! her brother moans, surprised and turned on by the gesture. She does this a couple more times, and then even ends the final lick by going all the way to the tip and swirling her tongue across the tip. Her brother moans uncontrollably, and gently pushes her head down so that her lips wrap around the tip of his cock. Her eyes widen in surprise but she doesn’t pull away, in fact she closes her eyes and goes down deeper onto his shaft with her mouth.But a blowjob is just the start, because Gia’s got lots more to learn. Lucky for her, her big bro is ready to teach her!