Big Sister Is Watching You/Chapter One

Chapter One

It was around 12 AM on a summer night. Iris was lying on her side in her bed, scrolling through whatever apps sixteen-year-old girls find entertaining. Her long brown hair was free, and she wasn’t wearing anything but panties and a T-shirt. She didn’t have any school in the coming months because it was summer, so she stayed up as late as she wanted every night. No summer job either. She didn’t want one yet. Her parents didn’t mind because she got good grades.

After scrolling for a while, Iris needed to pee. She got up and quietly left the room, being slow because her parents and brother, Jacob, were asleep and she didn't want to wake them. To make it to the bathroom, she had to pass by Jacob’s door, which she noticed was slightly open. She heard a noise come from his room. Odd, he should be asleep right now. She took a peek inside, feeling safe because it was dark in the hallway. He couldn’t see her if he was awake.

She was shocked to see that her cute and innocent nine-year-old brother was on his back watching something on his phone while his other hand was moving under the sheet. He was masturbating. Her eyes widened in surprise, and she almost gasped. But she had to stay silent. She realized he was a boy, and boys do this type of thing. She shouldn’t be so quick to judge. He’s only exploring himself like she did when she was his age.

She kept watching and felt more immersed. It was cute how her little brother made faces while his hand moved under his sheet. Her mind drifted, and she tried to imagine what his cock looked like now and what he was watching on that phone. She’d seen him naked before, but only when they were younger. She got so caught up in her thought that she got aroused and temporarily forgot why she'd left her room. Suddenly, she snapped out of it, scolded herself for thinking like that, and rushed to the bathroom, still trying to make as little noise as possible.

She closed the bathroom door behind her quietly and clicked the light on. She slid her panties off and noticed a wet spot on them. Did she get horny from seeing her brother masturbating? She sat on the toilet seat and thought about what had happened while she peed. It wasn’t right. She shouldn’t be aroused by her brother, much less with that age gap. But she also thought that it wouldn’t hurt to have another peek.

Iris finished peeing and quickly wiped herself. She turned the light off before she opened the door, quietly tiptoed down the hallway, and peeked into Jacob’s room. He was still masturbating. She felt her face get hot as she watched him stroking his cock at a moderate pace. His hand movement implies his cock wasn’t that big yet. Sadly, the sheets obscured it.

Her heart rate was through the roof. Adrenaline was coursing through her body, and she loved it. The thrill of watching her brother masturbate was unlike anything she’d ever felt before. She was so in the moment that she reached her hand into her panties and began to feel around her pussy. It was so wet she could slide two fingers inside without effort. Her clit was hard. Touching it sent electricity through her body. She was so captivated by him that she had to masturbate. She wanted to do it with her little brother.

She slid her middle finger deep into her hole and moved it at the same pace he stroked. She imagined that her finger was his cock. Her mind could only think about him. She could barely control herself, and her moans were nearly slipping out. She managed to hold them in.

Watching her little brother jerk off was amazing. It was better than the porn she normally watched. She knew it was wrong, but it felt so right. She imagined herself riding his cock, or maybe him thrusting into her doggy style.

She began approaching her orgasm and covered her mouth to keep herself silent. She noticed he started stroking faster and knew he was close too. She decided she was going to time her orgasm with him. She watched closely as he slowly raised his hips. His eyes closed tight, and his teeth clenched, obviously about to cum. She was there with him, right on the very edge. She quickened the pace and closed her eyes with him. They got closer and closer, and the sweet release of their orgasms filled their entire bodies with pleasure. They came together, except only Iris knew. Her orgasm was so mind-blowing she could barely process it. She managed to keep quiet because she covered her mouth. It would have been loud if she didn’t.

Iris opened her eyes again and looked back inside Jacob’s room. She could see him breathing hard, just as she was. So cute. He was recovering from a nice orgasm. The adrenaline was beginning to wear off, so she was able to steady herself a little. She looked down at her panties. What a mess. It’s probably the wettest they've ever been. She’ll have to change them. She took one last good look into Jacob’s room. His phone was off, and he looked as if he was already falling asleep. She couldn’t see much anymore, so she retreated into her room and slowly closed the door.

What an experience. She threw herself onto her bed and stared at the ceiling, thinking about what just occurred. Her head was so hazy from that orgasm that she couldn’t think coherently. She felt more sleepy by the minute. Eventually, she was fast asleep.

The next night, Iris was lying in bed thinking about Jacob masturbating. She never thought she’d say a little boy turned her on, but he did. Earlier that day, it was the only thing that occupied her mind. She wanted to see it again.

She decided she might as well take another little peek. It couldn’t hurt. She snuck out of her room and approached Jacob’s door, which was further open this time. She looked inside, and he was masturbating again, but this time on the top of the sheets. Her adrenaline spiked as soon as she saw him. She could clearly see his cock now. It was still quite small since he was nine years old, only about three inches in length. It seems like this kid has a libido already. How long has he been doing it? Every night? She thought about questions as she watched him stroke his little cock.

She loved the thrill of doing this. Watching her brother in secret was risky but rewarding. He was adorable and inexperienced. She wished she could teach him what sex was all about. She wanted to feel his hard cock in her mouth and teach him real pleasure. She wanted to slowly lower her hips onto his cock and ride it; or have her ass up while he thrusts into her. She was so excited fantasizing about her little brother she couldn’t contain herself.

She slipped her hand into her panties and began masturbating again. Her clit was hard like last time, and it was electrifying to touch. Her left hand ran up under her T-shirt, and she began rubbing her nipples. Pleasure shot down to her pussy as she rubbed them. She didn’t have a spare hand to keep herself silent this time, which was risky.

She slipped her middle finger into her pussy like before and let out heavy yet quiet breaths. She began pinching her right nipple with her offhand while she masturbated. It made her wince but brought immense pleasure. Her panties got soaked and couldn’t contain it, so it leaked onto the floor.

Iris was so caught up in what she was doing that she couldn't help making a noise. She paused, hoping he didn’t hear, but he paused as well, with his stiff cock in his hand. Her adrenaline went through the roof, and her heartbeat pounded.

”Fuck, fuck! Don’t let it end like this!” she thought to herself.

”Iris?” Jacob questioned sheepishly. He turned off his phone and put both hands over his crotch trying to hide that he'd been masturbating.

”S-Sorry, I was just going to the bathroom,” Iris said as an excuse. He’s only nine. He should fall for it, right?

”What was that noise?” he asked. ”Shit! He really caught me?” she thought.

”Nothing, I just hit my toe.”

”I didn’t hear a stub.”

She was running out of excuses. She couldn’t do anything. She could either run or confront him. She wasn’t thinking clearly, so she decided she would go the latter path.

Iris slowly opened the door and entered the room, locking the door behind her. Jacob quickly made his way under his sheets to hide his lower half. She sat on the edge of the bed and faced him. He looked pretty scared. She stroked his brown, messy hair in an attempt to soothe him.

”Listen, I know what you’re doing,” she said.

”Y-You do?” he said fearfully.

”Yeah, and I like it too. Were you watching a video?”

”Uh, m-maybe.”

”Show it to me. I won’t tell Mom,” Iris said with a smile. Jacob was still a little nervous, but it was clear that she wasn’t trying to snitch on him.

He nervously complied and unlocked his phone. He was watching porn; a girl sucking on a big cock. She chuckled and looked up at him.

”If you promise not to tell anyone, we can do it just like those videos.”

”H-Huh?” he was surprised. Do it like the videos? Is she crazy?

”Don’t be scared, Jacob. Let’s do it.”

End Chapter One

Chapter One → Chapter Two

Back to Index