Leave your sister alone for now.

You spend the next couple hours in your room, contemplating the mysterious power at your fingertips and staring at the clock, antsy to get to the next phase of your plan. Your parents aren't home and you want Sarah to stew on your threat of consequences for a while before you do anything more to her.

Eventually you get a text from Kelly, telling you her husband is home and they've had dinner. Grabbing something to eat on your way, you put on your jacket and head out.

Andrew's dad opens the door when you knock.

"Good evening Mr O'Brien," you greet him, reaching out to shake his hand.

He gives you his hand, and while you squeeze it you pull the stamp out of your jacket pocket and press it against its back, marking him as your cuckold.

"Ryan, what brings you here so late?" he asks with a glance at his hand. "I assume you want to see my wife?"

"You know it," you answer, amazed at how quickly he accepted his new reality.

"But first, I want to go over some ground rules. You do not get to see Kelly naked anymore, and you will not have sex with her unless I tell her to." His face drops, but you continue before he can say anything. "She might give you a blowjob if you ask nicely, but not tonight. She will tell me if you break these rules, so don't even think about joining her after I leave. You sleep on the couch from now on."

Leaving him gaping at your back, you head upstairs where your conquest is waiting for you.

"Hello sir," Kelly greets you, standing almost seductively in the doorway to her bedroom. "You talked to my husband?"

"He won't be bothering us," you confirm without giving her any details. "Now let's get to us."

Sitting down on Kelly's bed, yo notice she has the TV on, watching some show you don't know.

You decide to let her keep watching, lying down so she can give you a blowjob without taking her eyes off the screen. To your amusement, she actually seems grateful for this arrangement, and thanks you for being so thoughtful while she crawls onto the bed.

You enjoy a languid blowjob with your hands behind your head, letting Kelly enjoy her show while pleasuring you, moving her full lips up and down your shaft slowly so she can keep her eyes on the screen.

Only when the credits start rolling do you take charge, grabbing a fistful of hair and slamming her into your crotch repeatedly, not even stopping when you cum. The angle of Kelly's head and your roughness makes it hard for her to swallow, and most of your cum sprays down onto your crotch and her lower face. Or maybe it has something to do with your standing order that she wait for permission before swallowing. Either way, you're greeted by a cummy mess when you pull her off your cock.

Before letting her clean herself, you order her to lick you clean. Then you sit up and allow her to wipe her face with her husband's shirt, which she takes off and throws into the hamper.

She's about to get up to retrieve a new top from the closet when the next episode starts playing, and you tell her to sit with you. Not wanting to cause a fuss and figuring that you've seen her in her bra anyway, she sits down and leans against your side. Draping your arm over her shoulder, you start lightly stroking her upper arm as you watch. Over the course of the episode your hand roams over her back, hip, and abdomen, while (at your insistence) her right hand fondles you through your pants.

You're careful to stay on her bare skin, never straying over (or into) her bra and pants. Despite that the effect on Kelly is unmistakable, and it gets too much for her about halfway through the episode. Biting her lip nervously, she turns to you. "Please sir, you're getting me too excited."

Part of you screams to ignore her and keep going, but the more calculating side keeps you grounded. One step at a time, you remind yourself.

"No problem, we can stop here. There's something I need to test anyway, do you have a sheet of paper?"

Nodding with relief, Kelly gets up and you join her at her table, where she provides a blank sheet.

Picking up a pencil, you write Ryan Ferro's Paper and ask Kelly who it belongs to. "It's yours, sir."

Spotting an eraser, you order her to partially erase what you've written, so you can see if she's able to refresh it when it starts to wear off.

Dutifully, Kelly picks up the eraser and starts dragging it back and forth. And back. And forth.

After thirty seconds you stop her. Pushing her hand off the paper, you're surprised to find the text isn't even smudged. You squint at the pencil to make sure you didn't somehow use a pen without noticing, then grab the eraser and get to work yourself.

This time the text comes off without resistance, within seconds it's like it was never there. What the heck is going on?

Then it dawns on you: the ink on Kelly's arm didn't wear off because of the shower, it wore off because you scrubbed it off. You don't have to worry about anything you write disappearing by itself!

Relieved that you don't have to order everyone you write on to neglect their hygiene, or figure out how to work a tattoo gun to make your claims permanent, you celebrate by pulling the confused Kelly into a long kiss, during which you grope her ass roughly.

After breaking the kiss you snap her bra strap, smack her ass goodbye, and excuse yourself for the night, once again leaving without giving her a chance to protest.