Kelly, the Stepsister

Ralph's alarm clock went off and he let out an annoyed moan before turning it off. He felt a little strange remembering some very sexy dreams he had. That was sort of weird for him but they were very graphic and felt very real.

He rolled out of bed and headed to the bathroom to shower and get ready for school, not noticing anything strange at first, but he was also not fully awake and didn't notice the stains from last night until he got into the bathroom and turned the lights on.

"What the Hell?" He said noticing all these dried-up stains on his shirt and shorts. "Is that...... did I have a wet dream?" He said seeing what looked like dried-up cum. "Son of a bitch." He stripped off his clothes, throwing them in the hamper before he noticed something else that was strange.

His penis, which was usually small and shriveled up, was huge. Hanging between his legs looking like a pornstar cock and all he could do was stare at himself in the mirror and wonder what happened.

"This....... am I still dreaming?" He said, moving his hips and watching this thing sway back and forth. Suddenly the door opened and Kelly walked in, not paying attention. "KELLY!" He said as she looked up in horror.

"Oh shit, what are you......" she started to say before her eyes drifted down toward his penis and she couldn't stop staring.

"Get out!" He demanded, gently pushing her out and shutting the door.

Kelly stood there in the hallway trying to process what she just saw as she heard the shower start. She began to feel very strange all of a sudden as she headed back to her room but stopped when all she could think about was that giant penis on her stepbrother.

"Stop it, Kelly, he's your......." she tried to tell herself to stop but she suddenly began to feel wet between her legs.

"Do it," this faint voice whispered in her mind.

"What...... who?" Kelly said, turning around to find where the voice was coming from.

"Do it, you want it.......... I COMMAND YOU!"

Kelly felt this jolt through her body as she jumped back against the wall. Her heart was racing as her panties began to soak through and all she could think about was how good a penis like that would feel inside her.

"Yes, I need........ I need that cock!" She said as her eyes flashed green for a moment.

Ralph continued to shower, unaware of what was happening with his stepsister out in the hallway. As he washed up, he began to become erect seemingly for no reason at all.

As he washed the soap from his eyes he noticed the raging hard-on between his legs which was even more impressive fully erect. It also felt a little strange as he felt a slight tingle from the base to the tip.

"Woah...... what the....." he said, not noticing the bathroom door had opened and closed quietly. "What the fuck is up with my dick today?"

The curtain suddenly slid open and Kelly was standing there, naked with a hungry look in her eyes as she stared at his erect monster penis, stepping into the shower with him and closing the curtain behind her.

"Kelly, what the fuck?" He asked as he backed against the wall.

He had never seen Kelly fully naked before and for a moment he was impressed and aroused by what he was seeing. She got down on her knees and grabbed his cock before her mouth had fully engulfed his tip and she was sucking him hard.

"FUCK...... Kelly, we can't...... what are you........ shit shit!" He said as he couldn't help how good it felt but knew they shouldn't do this.

"Listen, little bro," she said with precum dripping off her lips as she looked up at him. "This is fucking happening!"

Kelly stood back up and pounced on him, pushing him against the wall as she impaled herself on his raging cock with more ease than should be possible. Ralph could have sworn he saw a green flash in her eyes but couldn't concentrate long enough to think about it.

"HOLY SHIT!" She yelled out as that cock entered her body. "You have to fuck me, you have to......." she begged moving her hips and moaning.

Ralph still couldn't believe this was happening as he grabbed her ass and fell to the tub floor and began to fuck her stepsister. Her moans filled the room and he was worried someone was going to hear them which would not be good.

"You have to be quiet," Ralph said as fear gripped him.

"Mom left already, so just fuck me God Dammit!"

Ralph shoved his cock as deep as he could as warm water rained down on them both. He couldn't believe that he was fucking Kelly, which had been a mild kink of his, but he had known her so long that she felt like family, which for some reason turned him on even more. She wrapped her arms around him, digging her fingernails into his back as she moaned in his ear. She wrapped her legs around him as well as her pussy had never been filled like this before.

"Jesus, fuck me bro, fuck my pussy like the slut I am," she said which shocked Ralph, never hearing her act like this before but it still turned him on even more.

He could feel himself getting ready to cum and he was getting nervous as he didn't want to get her pregnant. He knew he had to pull out right before he was gonna cum but it was hard to convince himself to do so, but before he could consider it, her legs tightened around his waist.

"Cum in my Ralph, cum in your sister's pussy."

"Shit Kelly.....you gotta stop," he said as her words just made it harder for him.

"Do it Ralph, cum in me. I took your virginity so you have to fucking cum in me....... NOW!"

"Shit......... SHIT!" He cried out as he started to unload into his stepsister with more **** than he had ever cum before.

He could feel his cum squirting out of her and back against him as she went cross-eyed with the craziest orgasm she had ever felt as she held him tight against herself and just let the pleasure wash over her.

"Fuck...... fuck that was good. We're gonna do that again," she said with the sound of satisfaction in her voice.

"Kelly, what the fuck?" Ralph asked still confused.

"Shhh," she said placing her finger on his lips. "Don't think about it too much, just know that this pussy is yours whenever you want. And I do mean, whenever the fuck you want," she said as Ralph just stared at her confused and turned on by her words before she kissed him and climbed out of the shower.

Ralph sat there on the shower floor, still reeling from the amazing sex he had just had with Kelly. He couldn't believe it, and the fact that she wanted him again just confused him even more but was also so kinky that he almost couldn't wait for round two.

As he stood back up to finish his shower, he noticed some green liquid on the shower floor like it was washing off of him. He looked around wondering if there was an open body wash or something but he couldn't figure it out.

Algoth let out a satisfied moan and began to plan for what was next. Kelly was now enslaved to him and he was going to corrupt many more who would live to satisfy Ralph's sexual desires.