Sarah is waiting outside your room when you get back.

"Hey um, Ryan?" Sarah greets you as you come up the stairs. "Can you please tell mom about our rooms?"

"Why, what's going on?" You ask as you step past her into your room, indicating that she should follow.

"Well, she came home a while after you left and demanded to know what I'd done to your room. I tried explaining what happened, but I guess I didn't do a great job. In the end she just locked the door and said she'd give you the key when you came back. But you were gone for like two hours. I think she went to bed."

"Man, things are not going your way today," you laugh. "If mom's asleep I'm not waking her, you know she has to get up early."

After a moment's thought you tell her you'll text your mom and ask her to give Sarah the key before she goes to work. "For tonight, you'll sleep with me in your old room."

"Sleep with you!?" Sarah is aghast.

"Whoa, no, I meant you can sleep on the rug! I thought it'd be more comfortable than the wood floor in the hallway, What kind of brother do you think I am?"

Sarah looks at you with relief. "I'm sorry, I just... you did make me use your vibrator while you filmed it and all."

"That was just me being an asshole. You know I wouldn't actually-" Wouldn't you? a voice in the back of your head asks. You shake it off and continue. "I'll get you some blankets and delete that video."

"You will? Thank you!" She runs across the room to wrap her arms around you, glad to know that her brother isn't an incestuous creep.

The problem with that? Your sister has really nice tits. They're like two little pillows strapped to her chest. Not very big, but her slight frame makes them stand out anyway. They're soft, and bouncy, and now they're pressed firmly against your chest.

Of course this isn't the first time that's happened. Despite playing the mean older brother whenever you see an opportunity to, the two of you usually get along well. And Sarah's a hugger. Her hugs have never caused you any perverted thoughts, but you're still horny from Kelly fondling you without release. You've openly watched your sister masturbate. You have a new god-like ability at your disposal. And again, her tits are really nice. You don't have the willpower to resist.

"There is just the small matter of your punishment," you say as the hug ends.

The mention of her punishment should worry Sarah, but your promise to delete your **** material has put her at ease. "Small mattter?"

"Very small. I just want to draw something on your stomach. Like a temporary tattoo."

"Weird request, but I was expecting a lot worse. Draw away, bro."

Grinning like a madman, you open your desk drawer and dig around until you've found an assortment of sharpies in different colors. Your emergency stamp would do the job for what you have planned, but you want it to look nice because it's going to be very visible.

Sitting on the edge of your bed, you gesture for Sarah to approach. When she's standing before you she rolls up her shirt, revealing her trim stomach. You trace your hand over her tan skin, mapping out your canvas. Due to her low-riding jeans, you have plenty of room to work with below her belly button. Goosebumps spread over her skin, and you share a chuckle.

Uncapping your first sharpie, you get to work while Sarah cranes her neck to see what you're doing. You start with a bunch of little flowers on her right side, left from your perspective. On the other side you add a swarm of tiny hearts, leaving a wide space in the middle.

Finally, in your fanciest script, you write Ryan Ferro's Property in the gap.

Instantly, your sister freezes. It's like Mrs O'Brien not being able to use her mouth after you claimed it, but for her whole body.

As such, she doesn't scream or try to cover up when you pull her pants and panties down, revealing her smooth shaved pubic mound. Uncapping your last sharpie, you draw a big arrow pointing down at her pussy.

It takes Sarah a moment to realize her body is hers again, at which point she hurries to pull her pants up.

"You know," you tell her. "I guess it's fitting that you'd borrow my sex toys, given that this is mine too. How often do you do that, by the way?"

It's clear that Sarah doesn't want to answer, but she also feels bad about using your sex toys without permission. "Usually twice a day. Sometimes more."

"Jeeze, that often?"

"Don't judge me, I know you're jacking off all day too."

"At least I jack off with my own genitals instead of someone else's. I don't like you touching my pussy. I'd forbid it, but-"

"But what?"

"But if you're anything like me you'd get so pent up you'd go crazy. It's not your fault it's attached to you, so... I'll let you do what you have to do once every two days, under my supervision of course."

Sarah fights with her emotions for a while. She has no interest in masturbating in front of you again, but she understands better than anyone how not getting any release affects her. Knowing that a word out of your could condemn her to celibacy, she settles on gratitude. "You'd let me do that? Even after I stole your room and accused you of blackmailing me?"

"I am weirded out by this whole situation, but it must be hitting you even harder. As your big brother, I feel like I should try to be supportive. Since we're on the topic, do you need to take care of yourself now?" Sarah nods. "Do you need any toys?"

"No, when I'm about to go to sleep I usually just use my fingers."

"Alright. You can get started while I find some blankets."

Standing up, you push past your sister to open the closet. You can feel her eyes on your back as you reach in, but eventually the rustling of fabric lets you know she's settling down on your bed. It doesn't take long to find a set of blankets, which you drop on the thick rug before sitting down next to your sister.

She looks away nervously, but doesn't stop moving her hands between her legs. Your pants get tighter and tighter from watching the erotic show. "Fuck, I need to take care of this. You don't mind do you?"

Sarah's head jolts as if slapped. "I... I guess it'd be pretty hypocritical while I'm sitting here fingering your pussy. Just don't make me look at it."

"Like I'd want you staring at my dick?" Turning away slightly, you undo your zipper and pull your cock out, knowing full well that it's still in her peripheral vision.

She closes her eyes as if to ignore your presence as her fingers start moving again, but every once in a while they open a crack to peek at you. Your fist flies up and down your shaft, and you grunt louder than is strictly necessary, pretending that you haven't noticed her looking.

Not a word is said for the next several minutes. When she cums your sister bites her lip, trying to keep quiet. You make no such effort, and she looks away quickly when your first rope of cum shoots into the air.

You throw your stained shirt in the hamper on your way to the bathroom to brush your teeth. Having brushed hers while you were out, Sarah does not join you. Probably for the best.

While you're there you also message your mom, and reluctantly delete the video from your phone. It's not like you're going to need it, you console yourself.

When you get back to your room Sarah has buried herself under a pile of blankets. Turning off the lights, you get into bed and say goodnight, but she's either already asleep or pretending that she is.