Preparations

Tonight is the night. Mom and Kaila, my other sister, are soon to come over for a family get together. They usually come around once a month to say hi and check in on us, but they have been busy for the last few weeks so they have only gotten around to doing it now.

After a lot of contemplating, I decided that I couldn’t just let Diana have all of the fun. I wanted to try something out on them. But, that being said, I had to prepare Diana for their visit tonight.

With all this risk at play, I need to be sure that Diana fully has my back. Yes, she has basically been at my will for the last bit of time, but I’m still new to this.

Sometimes, when I wake up in the morning and see Diana innocently going about her day, I feel a little guilty. Because deep down, she is not going about her life, she is looking at the world through my own perverted lens. She’s always naked, begs me to take showers with her, feels gratitude when I eat her out. I often wonder how she would react if she knew what was really going on. But, it’s too far to go back. It’s too far to stop now. I’ve had a taste, and I want more. And to achieve that, I need to do things… things that CAN’T go wrong. With my other family involved, one small slip-up and everything comes tumbling down.

Still, I don’t know if I’ll be able to go through with it--bringing my loving mom and younger sister into this. I can stop while I’m ahead, but no. I find solace in the fact that I am just preparing right now. If I get cold feet, nothing is stopping me from turning around later.

Now, back to business. I get out of bed and enter the rest of the house finding Diana in the bathroom brushing her teeth getting ready for the day. Like always, she’s fully nude. Her oblivious nature to her situation is kind of cute. Thinking of the fact turns me on almost as much as her perfect tits. With each stroke of her toothbrush, every inch of her meaty body seems to sway from side to side as if it were made of jello.

A mixture of spit and toothpaste form under her face creating a white-looking substance that rolls down from her mouth all the way to her breasts, like some sort of suggestive innuendo.

“Morning Tommy!” she mumbled through her toothbrush.

“Morning,” I smile back, not really paying attention to the conversation.

“Mom and Kaila are coming over tonight. Can you clean the place up?” Diana asks.

She’s right. Despite the changes that I’ve made around here recently, I can’t be embarrassing myself in front of my family. Like I said before, I’m not a slob by any means. Neither is Diana. But… we can get lazy at times, and our place could use a touch up. But of course, that’s not a job for the man of the house.

Just like any other day, it doesn’t take Diana long to get into the Fast Learning Machine. She’s proud of her invention, she really is, and as you probably have observed, she likes using it--like a lot--which is a good thing for me.

As I walk into the lab the sight of her naked, almost lifeless-looking body doesn’t incite the same excitement that it once did. Yeah, she was hot and my body obviously reacted accordingly to seeing an attractive female body, my sister’s nonetheless, but I didn’t have the same untameable urge to go out and feel her, to grope her. At first when this all started, I thought that this would be enough. I’ve gone further than where I thought I would, but I still want more.

But first, I have to deal with tonight. Just like the dozens of times that I have done before, I walk over to the terminal and begin to type:

It is Diana’s responsibility to keep the house clean. She clean’s whatever Thomas tells her to.

When it comes to keeping guests entertained, you must do what Thomas says to keep them happy.

And just like that, I was done. I don’t know what I’ll have happen tonight, but this gives me some flexibility at least.

I wait around in the living room for a little bit until Diana is done with her work in the lab. She gets up and walks over to me. I stare at her firm tits and instinctively start rubbing my hardening cock.

“Okay Tommy, do you want me to clean?” Diana says.

“Uh yeah. Just go ahead and start anywhere. They’ll be here within a few hours,” I say.

Suddenly, my sister turns into a maid and gets to work. First she clears all of the tables and puts away the dishes. She has to tiptoe to reach the top of the shelf, putting the back of her pussy in clear view.

Then, she starts to vacuum the entire house. She plugs in the cord and walks it around the entire house. For some reason, she’s taking longer than it should to complete this task, but I soon see why. She seems to be placing the handle of the vacuum up onto her exposed pussy, feeling its vibration and warmth.

“Diana,” I say, grabbing her attention. She looks up at me. “I think the floor is clean.”

“Oh, there is one more spot,” she says.

She grabs a sponge and bucket from the closet and goes to the kitchen where she fills it up with soapy water.

She walks over to the living room and stops in front of the couch I was sitting in.

“We can’t let mom see all of our cum stains,” Diana said with a laugh.

She’s right. Every day for the last week or so, Diana and I have been masturbating to each other on this same spot right here. Our combined fluids seem to have left a residue on the floor.

Without saying another word, Diana gets down on all fours right in front of me. She takes the now soapy sponge and starts scrubbing the floor.

Scrubbing rigorously, splashes of soap and water get onto her chest. She tries to rub it off, but the only thing she succeeds in is spreading it around her body even more.

The sight of my sister’s body covered in water and suds gives me flashbacks to the second day that I started to take control of her. She repositions to start scrubbing a different spot, giving me a clear view of her wet pussy. She shaved semi-recently as I can see the tiny stubs of hairs starting to pop out. They can’t be longer than a few millimeters long. I reach out and touch them, feeling her wet, bumpy goodness.

Finishing up, she turns around.

“Alright, I’m all done. Tell me when they’re heading over,” Diana says as she gets up to leave.

“Wait, you missed a spot,” I say.

“No that can’t be, where?” Diana says.

“Right here,” I say as I continue to rub my cock.

“You want me to clean your dick? Okay come with me to the shower again,” she says turning her head towards the bathroom door.

“No. I need you to do it, with your mouth,” I respond hesitantly.

Despite all of the stuff we’ve done together, I’ve still never put my dick anywhere inside of Diana. I haven’t tried to push her that far, until now.

She stares at my cock hesitantly.

“Like a blowjob? I’ve never done that before-” she responds.

“No no no. It’s not a blowjob. You’re just keeping the house clean, and my dick is in the house,” I say.

That seems to make sense in her head.

“Oh.. okay…” she says as she begins to move her head towards my cock.

Slowly, she gives my head a kiss on the tip, then moves her tongue to swirl around it.

“Like that?” Diana asks.

“No, you have to go deeper, you have to bob your head if you really want to get my dick clean. But keep using your tongue. That part was good,” I say, beginning to close my eyes.

I feel my sister’s lips press upon my cock once again, only this time she goes deeper. She goes about halfway down the length of my shaft and starts swirling her tongue around it.

She gags and comes back for a breath of air. Now getting the hang of it, she goes down again, this time she goes deeper, no, all the way.

She continues to swirl her tongue around my shaft and begins bobbing her head up and down, up and down, up and down.

I grab her hair and hold it back for her but I have trouble. I feel as her loose strands of hair brush against my thighs with every motion of her neck.

With my dick still in her mouth, I grab her face and **** her to look at me, her soft eyes stare into mine. Despite the apparent pause in bobbing, her tongue continues to circle around the head of my dick. I take in the feeling of every taste bud rubbing against my skin.

When her mouth is at the top, she begins to jerk me off with her hands. The combined pleasure of feeling my sister stroke my cock while simultaneously blowing me is enough to get me to blow my load deep down my sister’s throat. She seems to be caught off guard but keeps going. I feel myself ready to burst again, and I do, shooting a second barrage of my seed down Diana’s mouth directly into her stomach.

She pulls out, gasping for air.

“Did I clean it enough?” she asks.

“Yeah, you did great,” I say, recovering from two intense consecutive orgasms.

She gives me a smile, showing me some leftover semen still inside her mouth.

I hear a knock on the door, so Diana gets up to get dressed.

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