Mark’s Dark Desires

By Reeb

This story is dedicated to a very sexy young lady at Lush.

Chapter I

His heart pounded in his throat as he reached for the door handle. Inside he could hear the splashing of the shower water cascading over his sister’s sexy young 18 year old body. Mark was 26 years old, living at home with a woman whom had become the subject of all his sexual fantasies, his gorgeous brunette sexy little sister.

He stood a good six foot three inches tall, slender muscular build, short brown hair with piercing deep blue eyes. He watched his sister’s every move, thoroughly examined her with everything she wore and had caught several glimpses of her in her bras, panties or bed clothes. His cock throbbed and ached for more.

As her and her friends paraded around their pool in their skimpy little bikinis, his eyes were always drawn towards his sister’s perfect teenage body. Her friends were all very hot but nothing compared to his sexy sibling, Kayla. He would often have to stay in the pool to hide his throbbing erection so the girls wouldn’t see how aroused he actually was.

One time he was terrified as his sister and her friends entered the pool with him. His cock was rock solid inside his swimming trunks as the sexy teenage girls moved towards him. Kayla jumped at him to dunk him, but he stepped back and she missed, her hands sliding down over the front of him as she submerged in front of him.

As her hands slid down his body, her right hand ran right over his erect cock. Kayla, under water, opened her eyes to see her brother’s huge thick cock straining to get free right before her eyes. She figured it was because of her sexy friends and but secretly wished it was for her. As she came up out of the water, she gave him a seductive look and turned to exit the pool.

Mark watched his sister’s perfect body, her exposed thong covered butt dripping with water as her and her friends headed towards the house. He was so fucking aroused, he slid his trunks down and in three strokes, shot a huge load of his hot white cum right there in the pool while his sister and her friend’s sexy butts were still in his sight.

Tonight, he waited in his room for his sister to head to the bathroom for her nightly shower. He stroked his cock softly while sitting at his desk reading his favorite brother/sister incest stories on Lushstories dot com. He had many saved as favorites but the one written by Reeb, “Sibling Shower” was absolutely one of his favorites.

After watching his sister shower last night, he searched for photos and videos of sexy brunette young girls showering. He also searched for any erotic story he could find involving a brother and sister fucking in the shower. Fortunately there were many of such type erotic stories to find. He was viewing photos he had of shower fuck pics as a slide show waiting for his sister to take her shower.

As he softly rubbed his thick hard-on through his shorts, he heard Kayla’s door close as she passed his room heading towards the bathroom. He stood, removed his shorts as in his birthday suit, he quietly proceeded down the hallway and stood at the bathroom door as the shower water started to spray. He gave his sexy sister a few minutes to adjust the water and step into the shower stall. His fingers trembled as the touched to cool steel of the door knob, turning it slowly.

Kayla adjusted the water real hot as it cascaded down over her head and smooth tanned shoulders. She stood about five feet six inches tall, dark brown shoulder length hair, grey-green sexy eyes, dark tanned skin, smooth with absolutely no baby fat at all, her breasts were a supple 34C cup with medium sized nipples and her pussy was completely waxed smooth. She was so proud of her developing body as she knew she could arouse any man.

As she lathered her hands with soap and began to caress and wash her gorgeous body, she wondered, would he do it again. Last night she knew her handsome brother was watching her take her shower. She sensed the door open as she left it unlocked on purpose. She felt his eyes burning into her soul as she ran her soapy hands all over her young teenage body.

Her pussy tingled with sexual excitement as she imagined him stroking his big cock while watching her bathe last night. The shower stall glass was lightly frosted from the shoulders down so you could see out over the top. If you moved close to it, you could just about see right through it, but not quite. Suddenly, she caught movement of the bathroom door out of the corner of her eye as it opened slowly again.

Mark was standing naked in the hallway stroking his long thick cock as he slowly opened the door, only a few inches it took until he could once again see his stunning little sister’s body. His cock felt heavier in his hand than it had ever in his life. He was so fucking aroused he could hear his heart pounding in his chest as he took in every inch of her beauty.

She stood with her side facing him, her head tilted back as the hot water flowed softly over her head. The sexy outline of her body caused a huge drop of pre-cum flow from his shaft. Her breasts were hanging perfectly, upturned slightly with her nipples hard and erect. He could see the perfect outline of her smooth belly, her taught abs and rounded hips.

His cock throbbed at the sight of her gloriously fantastic butt cheeks. His eyes consumed every inch of her sexy teenage body as he took in her long perfectly shaped legs. He pulled and stroked his hard cock slow and hard as he intently watched his sweet little sister’s hands lather and soap up every inch of her body.

Kayla was trembling with sexual excitement knowing her brother was watching her again. She decided to give him a good show tonight. Last night she was just a bit shocked he was so bold as to actually spy on her taking a shower. She couldn’t believe how much it excited her and after her shower, she masturbated in her bedroom for hours, fantasizing about her brother fucking her until she fell asleep.

With her eyes nearly closed, she could see his silhouette in the dim light illuminating from the bathroom. Her pussy juices flowed as she could see he was completely nude and stroking his cock. She chuckled inside thinking how brazen he was to think he could do that and not get caught. She reached for the shampoo and lathered up her hair.

With her head tilted back, she turned and faced her brother giving him a full frontal view. She moved closer to the shower glass, giving him a clearer view of her perfect breasts. Looking through her nearly closed eyelids, she could see him stroking just a bit faster on his huge cock. She couldn’t tell, but his cock had to be almost eight inches long and very thick.

Even in the semi-darkness, she could see his swollen cock head was huge.

Mark’s eyes were riveted to the sweet teenage body standing before him glistening, wet and shiny. Her breasts were absolutely stunning, full and firm looking pale white mounds of exquisite flesh. His eyes moved downward, following the streams of lather flowing down over her body, over her smooth belly to the sexy smooth bare white pussy mound. He moaned very softly as he took in his sister’s beauty.

Her pussy was completely smooth, void of any hair, clearly visible through the frosted glass. Her sexy abs formed a perfect vee as her mound bulged out. He could see her swollen clit pushing out through her labia, although not clearly, he still could make out what he was seeing. The sexy flare of her hips just below her narrow waist was simply stunning.

He had to slow down stroking his cock just a bit as the sight of his nude sister was driving him to orgasm rather quickly. She cupped her breasts in her soapy hands and pushed them together. Her slick fingers toyed with her erect nipples as her right hand lathered her smooth belly as it moved lower and lower. Now it was her turn to moan out as her fingertips touched her swollen clit ever so softly.

Her juices were flowing madly as she was so excited, so excited to be touching herself right in front of her hunk of a big brother. She cupped her pussy mound and slipped two fingers deep inside her as her left hand continued to caress her right breasts, teasing and pulling at her hardened nipple. She pushed her hips forward, giving her brother a great view of her fingers moving in and out of her spread labia.

He felt his knees shaking as he couldn’t believe he caught his sister actually masturbating in the shower. He took his palm over the end of his huge purple cock head and spread his pre-cum all around, creating intense pleasure as he watched his gorgeous sister finger her pussy. He was getting close to cumming. Not yet, he wanted this to last so much longer but she was so fucking hot, there was no way he’d last much longer.

Kayla was feeling her orgasm building as well. She looked through her squinted eyes to see her brother stroking his cock much faster now. It was time to put him over the edge, she thought as she laughed inside, time to tease him past the point of no return. She moaned just loud enough for Mark to hear her, a moan of passion as extreme pleasure consumed her young body.

“Ummmmmmmm yessssssssssss!” Kayla moaned out.

Slowly she turned her sexy body and pressed her perfect heart shaped ass against the shower glass. She leaned forward and gave her brother a good view of her hand working her pussy from behind. It was a sight to arouse him beyond his wildest imagination. Never had he thought his sister’s butt could look any more exciting, never look any more desirable than it did that very second.

Mark loved his sister’s sexy ass and this was nearly too much. He watched her rub her pussy as he pulled his long thick cock hard and fast. He studied the sexy tan lines of from his sister’s sexy thong bikini as he felt the first surges of his seed rushing up from within his body. Her butt was absolutely perfect, sexy globes of tanned soapy butt flesh pressed against the glass.

She moaned again as her fingers thrashed wildly at her aroused pussy. He watched as she moved her sexy butt from side to side as she let her fingers glide in and out of her pussy. She squeezed her thighs together, trapping her hand before spreading here legs apart once more. He was so close, his cum was beginning to boil over as he lusted over his sister’s wonderful butt.

“Uuuuuugggghhhhhhhhhh, Kayla!” he moaned out as his cock erupted.

His knees shook as one, two, three huge spurts of his cum flew out, landing on the bathroom floor. Kayla heard him cum and within seconds her body shook and shuddered with an intense orgasm of her own. As she regained her senses after the waves of intense pleasure subsided, she turned to see the bathroom door closed, Mark was gone.

She wanted her brother so badly but she was unable to make the first move, which would have to be his. All she could do was to try to tease him, to arouse him until he would cross the line, the line of making love to his sister, committing incest. Her pussy tingled again as just the word excited her.

As she turned off the shower water and stepped out onto the rub, she could see her brother’s cum on the bathroom floor. She knelt down and reached out, touching it with her fingers. She rubbed it between her fingertips when a sudden urge to taste it overpowered her. Bringing it to her lips, she flicked her tongue out to taste the saltiness of her brother for the first time. Her pussy once again quivered with excitement.

Kayla dried herself off and walked down the hall towards her bedroom. As she passed Mark’s room, his door was wide open as he sat at his desk surfing the internet again. A devilish thought passed through her mind, wrapped in only a towel, she turned and looked towards her brother.

“Hey there Mark, what are you……………..” when she acted like she accidently dropped her towel.

Kayla stood there completely nude in front of her brother for only a few seconds but for Mark seemed like an eternity. There was no frosted glass to hide anything, no frosted glass to entice the imagination, she was standing there completely exposed until she covered her breasts, bent over, picked up the towel and ran to her bedroom.

“Mark, don’t look!” she yelled out as she scampered down the hall.

Mark was sitting there in shock, his cock was completely stone hard again. He stood up and walked over to close his bedroom door, locking it. His body was shaking as he removed his shorts, slid onto his bed, reached over to his night stand and grabbed the bottle of hand lotion. Within seconds, his eyes were closed envisioning his nude sister standing in his doorway, stepping into his room and dropping to her knees to suck his throbbing cock.

“Ahhhh yesssss Kayla!” he moaned out as his cock erupted.

His hand was soon flying up and down his shaft as he arched his back and shot a rope of his white hot cum a good four feet up in the air, landing on his lightly haired chest. His heart was pounding as he had just had the most intense and hard orgasm of his life, all the while picturing his gorgeous sister in his mind.

Kayla stood nude outside Mark’s bedroom door listening to him pounding his cock and moaning out her name. As he had his orgasm, her fingers were rubbing her excited pussy once more, completely coated with her juices. Yes, her plan was working. She was arousing him more and more, soon he would be hers.