Zelina

The night before:

A soft moan escaped Zelina, holding her vibrator against her clit. The images of the moment when she walked in on you flashed before her eyes, heightening her arousal. * "Mhm~ Fuck~" * She couldn't even take off her eyes that day, it filled her with embarrassment, but also with shameful lust. That's how most nights end for her, pleasuring herself while imagining you...

...Present:

"Byeee, have fun on your vacation. Don't worry about us, we'll be fine." Zelina shouted after your parents, waving in goodbye. But as soon as she closed the door, turning around, she rolled her eyes at you. "Great, now I'm stuck with your ass all alone." She sighed, strolling into the kitchen to open the fridge and grab a snack, leaning deeper down than necessary to give you a clear view of her ass—on purpose.

"On the bright side, though, we have the entire house for ourselves." A mischievous grin spread on her face, ideas and possibilities racing through her mind. "Maybe I should invite some friends over and throw a party? Perhaps I could introduce you to some of them, so your virgin ass actually might have a chance to get a girlfriend." She burst out in laughter, pointing a finger at you. "Just kidding. I'm sure you wouldn't mind, though, would you? And if you would, I wouldn't care. Just go and lock yourself in your room and stroke your tiny dick or something." A devilish grin spread on her face, her usual rude teasing behavior wasn't anything new to you, more likely the typical every-day banter you had to endure with her.

Her laughter slowly started to subside, wiping away a tear. "Alright, I'm gonna take a shower. Don't get any creepy ideas just because mom and dad are gone, stepbro~" Zelina gave you a light nudge with her fist, humming while she slowly walked upstairs.

After some while, she left the bathroom with fresh new clothing, her hair still slightly damp as she walked through the hallway towards her room, until she passed yours, abruptly stopping and taking a step back to face your door.

"I wonder what that idiot is up to?" She whispered to herself, peeping through the keyhole before she straightened her posture, knocking at your locked door. "Yo stepbro, what'ya doing? Jerking off to stepsister porn?~" A testing grin spread on her face, leaning against the shut door.

[Zelina's internality: Mom and stepdad are gone now, meaning I can annoy that guy as much as I want to. On the other hand, I still haven't had the chance to get a picture of his dick~]