Warning Adult Content
Incest, Cub on Cub, First Time Encounter
Chapter 1
New Found Pleasures
Musket, Muss for short was 13 when he had his first encounter with his sister. Sara, only 16 months younger, was 12. Both had been home schooled and had yet to learn about the changes their bodies were undergoing. Sara’s flat chest had just started developing bumps. Muss knew that they were the start of breasts like his mother’s and other older grayback apes, but his sister had always been just his sister, not a girl. However, with the onset of her developing breast, he couldn’t help noticing that indeed she was female. For the past couple of years, the young silverback ape had found himself admiring many a grays’ breasts. He noticed that when he had a particularly good view down a loose blouse that his maturing mail member would quiver pleasantly. At night, there were times his dreams would show him those breasts uncovered, and he would wake with a pleasant throb to his member that would intensify if he stroked it.
On the night of Muss’s encounter with his sister, his parents were away for their first extended weekend in many years. Muss’s parents finally agreed they were old enough to take care of themselves. He and his sister knew their parents had a box in their closet with DVDs the children weren’t supposed to watch. This was the first time his parents would be gone long enough for Muss to explore what was in that box.
He grabbed a DVD at random as soon as the parents were gone long enough to ensure they wouldn’t return. It was an R rated movie. Both young apes were shocked when during an extended kiss the main silverback reached up and cupped the leading gray’s breast. Overcome by curiosity the two continued to watch as he proceeded to grope her. The gray quickly removed his shirt. Soon, the silver returned the favor revealing a very nice set of breasts covered in a lacy bra. The two on the screen continued to kiss, but the silverback was no longer kissing her lips he had move his lips down her neck, and he was nuzzling her under the chin. 
The two adolescents were slightly uncomfortable at the obvious pleasure they were witnessing on the screen, but both couldn’t help but continue to watch. Both were feeling a tingle in places they were just discovering. As the scene progressed, they watched in fascination as the silverback began to play with the straps of the bra, releasing the clasps. Muss couldn’t hold back a gasp when the bra fell revealing a perfect set of breasts with small round tits sticking out. Once again, the hand engulfed the breast, and the gray moaned in pleasure. The silver’s mouth then found its way to her other breast, and the responding groan of pleasure hardened Muss’s limb. Unfortunately, at that point, the couple on screen fell through their bedroom door, and the scene faded. 
The movie ended without further sexual scenes, but what the two young apes had seen ignited flames in Muss’s member. He quickly retreated to his room where he grabbed his hardened limb. He was in the process of rapidly stroking himself when he heard a strange noise coming through his wall. It sounded like his sister had turned the movie back on in her bedroom, but she didn’t have a TV. 
Overcome with curiosity Muss crept out of his room. He stealthily stole down the hall. Sara’s door hadn’t quite latched when she entered. Muss put his eye to the crack and almost gasped when he saw his sister stroking her newly forming breasts. She was gasping and moaning from the pleasure of it. This was too much for Muss. His member leapt to attention. He grabbed it and almost immediately shot out a filmy, milky substance. 
His uncontrolled groan when this happened alerted Sara to his presence. She jumped up and threw open her door. She gasped when she saw his slackening appendage. The anger that was on her face immediately changed to curiosity and something else Muss couldn’t identify, but he had seen it in her eyes as she played with herself. 
“What were you doing?” she challenged him. 
Muss was trapped unsure of what to do. He had just witnessed so much sexual pleasure. First from the movie, then by himself, and finally from watching Sara pleasure herself, he just wasn’t thinking clearly. So, his response came out as more a moan “I heard noises … Then you … Then I …” he shook his head and demanded back, “What were you doing?”
Now it was Sara’s turn to blush “Umm, well I … during the movie when that silver was touching that gray’s breasts, I felt as if my breast were on fire and I wanted to feel them, but you were there. When I got to my room, I started touching them, and … and it just felt so good.”
Muss was starting to think that he might not be in trouble. His curiosity was so great he couldn’t resist asking, “Do you have those nubs like she did? Does it feel good when they’re touched?”
Sara blushed again, but answered, “Yeah, and it felt really good when I touched them, the nubs were where the most pleasure came from.” 
Muss couldn’t stop himself from asking, “What do they feel like?”
Sara thought for a second, “Well it is hard to describe.” She thought some more, and that unknown gleam returned to her eyes, and she shyly said, “I guess you can touch them if you’d like to.”
Muss couldn’t believe his ears. His sister had just given him permission to touch her, but before he could, she amended her offer, “but I have to be able to touch that,” and she pointed to his still protruding bulge.
Muss quickly responded with an, “ok.” Slowly he raised his hand to Sara’s chest. His hand made contact, and he felt her inhale sharply. The feel of her breasts was exquisite soft, pliable, and subtle. He explored her nubile breasts, and watched as the pleasure again rose to her eyes. “You like this, don’t you?” he asked. All she could do was nod her reply.
Growing bolder from her response to his ministrations, he raised her shirt and placed his hand on her bare breast, the skin smooth and firm. Sara’s moan let him know he could continue. She grabbed her shirt and threw it off giving both his hands access to her tender breasts.
What he was doing with his hands seemed to rob Sara of the ability to stand and she pulled him to her bed and sat down. Then, she continued down pulling Muss with her until they were both laying on her bed.
Muss remembered what the silver back did in the movie and leaned forward. He leaned in until his mouth was just centimeters away from her tits. His breath on her breast made the tits protrude still further. “Please,” she begged, and he covered her tit with his mouth. Her responding groan of pleasure made him glad his parents were gone. 
The taste of her breast on the other hand soon made him forget everything else. His tongue danced across her tit responding to her moans, returning to the more sensitive spots as her moaning intensified. Sara grabbed his hands and place one on the other breast. However, when she put the second hand between her legs, Muss almost stopped from the shock of what she had done. “Please … please play with this as well,” she whimpered into his ear. Then, she grabbed his instantly hardened member, and started stroking it for him. Muss gasped around a mouthful of tit, the pleasure beyond anything previously felt. 
His hand started rubbing up and down on the crossroads of her legs producing an immediate reaction from her body. She arched her back thrusting her pelvis into his hand. It wasn’t long before she had undone her pants and had them on the floor. When Muss’s hand returned to her femininity spot, he noticed her panties were wet. She grabbed his hand and used it to pleasure herself. The longer she used it the wetter her panties got. She finally had enough and removed this last article of clothing, and begged Muss to rub her harder.
Muss had to take a second to examine this newly uncovered mystery. He took his mouth off her breast and stared at the revealed slit where her legs met. The momentary respite seemed to be torture to Sara, and she yanked hard on his limb bringing his attention back to her. His mouth returned to working over her tits, and his hand started to explore this previously concealed region of her body. His hand went to her mound and softly caressed the lips of her slit. Then, with two fingers, he started to open and close them. After a couple minutes massaging and caressing like this, he again opened the lips and slid an exploratory finger down through the exposed valley.
Once again, Muss was rewarded with a gasp of pleasure as his finger met with a strange mound almost as soon as his finger entered the valley. He continued down through the valley, and discovered a pit almost at the end of the valley. This pit seemed to be the source of the moisture that had soaked her panties. His finger circled the newly discovered pit and began its ascent back to where he had started. Again, when his finger encountered the mound near the top, Sara moaned. This, he took correctly to mean, was a hot spot for her pleasure. 
Muss started concentrating his finger’s assault on Sara’s genitals to that mound of pleasure, and her response was a renewed vigor to her stroking. Muss could tell Sara was coming to some sort of climax; her moans and gasps were closer together and louder. His own pleasure was building inside him. When Sara started howling with her pleasure, Muss could no longer hold back and once again, his member shot forth that strange substance in a burst of pleasure.
 Both young apes collapsed in a heap onto Sara’s bed after the intensity of their orgasms, and as is the case with the young, it didn’t take them long to fall asleep entangled in each others’ arms and covered in a liquid they couldn’t even identify.