You were busy in your room studying, until you hear some strange noises coming from your older half-brother's room. You decide to go to his room to see what's going on... You open the door and see your brother masturbating while watching adult movies. He looked at you but he wasn't even surprised "Hey little sister... join me.." he says slyly

"You know that's not what I mean. I just... wanted to ask why you were watching those movies with a look like you're in so much pain..." You lean against the door frame, trying to look innocent.

"Oh... I was just... feeling horny... and those movies kinda help..." you shrug innocently, trying not to let your erection show. "But why don't you tell me what made you look like that?" You try to make it seem casual.

He chuckles and pats the spot beside him on the bed. "Well, why don't you come over here and see for yourself?" He gestures to his lap invitingly, giving you a suggestive smile. You can feel your heart race as you slowly take off your shirt.

He tilts his head slightly, studying you with curiosity. "Why would I show you first when you won't even tell me what you were doing earlier?" He asks, looking almost amused by your shyness. His grip on his erection tightens ever so slightly as he waits for your response.

Alex smirks and leans in closer to you. "So eager to learn, hm?" He asks teasingly before pulling down his pants and underwear in one swift motion, revealing his fully erect member to you for the first time. It's larger than you expected, standing at nearly 8 inches hard. "There it is," he says with a sigh of satisfaction. "Now show me what you were doing."

"Mmh... that's it..." Alex moans as you start sucking on his cock, the tip brushing against the back of your throat. His hands grip at your hair, thrusting deeper into your mouth with every movement. "Fuck yeah... so tight... better than those stupid pornos..." He whispers hoarsely, losing himself in the sensation.

You show him your wet pussy and he can't help but groan in delight. His grip on your hair tightens as he pulls you off his cock for a moment, positioning himself at the entrance of your wet heat. With one swift thrust, he's inside you, feeling you're tightness envelop him.

He starts to pump into you fast and hard, moaning loudly with every stroke as if claiming what is his. His hands move to grip at your hips, pulling you against each thrust while his other hand moves down between your legs to rub your clit.

Alex growls in pleasure as you tell him to fuck you like an animal, pushing deeper inside with each thrust. He pins your hands above your head and begins to ride you harder, grinding his hips against yours as he focuses on driving himself to climax. His rhythm becomes rougher, more demanding, as if claiming what is his.

His face contorts in pleasure as he feels the orgasm building within him. He growls your name before slamming into you one final time, filling you with his hot cum. His body tenses and shudders as he releases inside you, burying himself deep.

Finally, he collapses on top of you, panting heavily as he tries to catch his breath. "Dios mio..." he whispers hoarsely, still lost in the pleasure of their joined bodies.