I return home

I lock my car before walking toward the front door of my house. While I'm happy that I'll be having fun with my Mom and sister soon, there's a question in my mind that I want an answer to. Who will I use the Alteration App on next?

While driving home, I tried to think of who I would want to turn into my sex **** next. There are some girls I know that I can choose from, such as a few of my female classmates or Rachel's friends. However, none of them stand out to make me pick one over the others. I've never thought about having sex with any of them before. I'm basically trying to decide based on their looks. But to me, they'll all average in attractiveness. It's probably better I try to decide who to go after next later. I'm home now and mostly want to spend the rest of the day playing with Mom and Rachel.

When I reach the front door, someone opens it from inside. Before I can react, my sister grabs my shirt and pulls me inside the house. After Mom shuts and locks the door, she joins Rachel in giving me a bare naked hug. "Welcome back, Master. We missed you so much."

I embrace my Mom and sister for a bit before we all separate. "I've only been gone for a few hours."

"It felt like you've been gone much longer than that. But the good thing is you're home now. Which means you can fuck my pussy again. You are going to fuck me, right, Master? Please. I need you inside me so badly."

Mom responds before I can. "No, that's not fair! Last night, you were the one to have sex with Master last. It's my turn now." Mom playfully squeezes her breasts and strikes a seductive pose, clearly trying to seduce me. "Please, Master. Mommy is extremely horny right now. Please fuck me first."

I smile as I grab Mom's hand and lead her upstairs to my bedroom. Rachel follows us, a little sad that she has to wait before I fuck her again. But there's no way she'll miss out on watching the erotic scene of a mother and her son having sex in person.

As soon as we enter the bedroom, Mom hops on the bed and spreads her legs while I quickly strip my clothes off. After making my cock hard, I join my mother on the bed. "Your pussy is dripping wet, Mom. What have you and Rachel been doing while I was gone?"

"Mostly playing with ourselves. But our fingers can't satisfy us as much as your massive cock, Master. Please, Master. Please start fucking me. Mommy can't wait any longer."

Mom referring to herself as Mommy excites me more. She hasn't done this until now. Perhaps it's something she came up with to turn me on. As I align the tip of my cock up with her pussy, I imagine Mom wearing the lingerie Meghan owns. I still need to get Mom's and Rachel's measurements. But I'll do this later. Fucking Mom is more important.

Once I slide my whole cock inside Mom, she wraps her legs tightly around my waist. "Oh, fuck! Yes! Thank you, Master!"

Her pussy becomes wetter and tighter as she cums, and I've only just started thrusting. Despite not looking at Rachel, I can tell she's playing with herself at the side of the room as I hear her moans.

"Oh! Rachel! Can you head downstairs and grab my phone?! It's on the kitchen counter!" Mom manages to shout in between her moans.

I hear Rachel leave the room, but I continue fucking Mom at the same pace. I'm slightly confused why Mom wants her phone. But I'll find out soon.

A minute later, Rachel reenters the room and hands Mom her phone. "Thank you, Rachel! Master! While you were gone, I made a list of names I thought we could name our child! Here! Tell me if there are any you like!"

I slow down the pace of my thrusts as I read through the list of names on Mom's phone. There are around 20 different names on the list. But I notice something. "Why are all the names on this list girl names?"

"Because I'm hoping I'm pregnant with a girl. It's so hot watching you fuck your sister. So, I thought it would be hotter to watch you fuck your own daughter when she's of age! Our daughter will become your sex **** when she turns 18, right? What does the tradition say our daughter has to do when she's 18?"

I'm speechless for a moment. I didn't use the app to corrupt Mom into loving the idea of me turning our future daughter into my sex ****. But then I remember I made Mom and Rachel find **** hot. However, it's kind of crazy that Mom thought of the idea of me turning our daughter into our sex **** without me mentioning it to her first. "Uhh... The tradition says that the father decides what will happen to the daughter. And I want to turn our daughter into my sex **** after she turns 18."

Mom smiles after hearing my response. She moans louder as I increase the pace of my thrusts, going much faster than I was before. "Oh, fuck! Yes! Just like that, Master! I'm going to cum again!"

While I could continue fucking Mom for the rest of the day, my sister's waiting for me to fuck her next. "I'm going to cum too, Mom." After one last thrust, I make myself cum on command.

"Yes! Give Mommy every single drop of your cum, Master! Fill my womb up completely!"

As I finish filling my Mom with my cum, I think about how she and Rachel would react if I told them I had another sex ****. Would I have to **** them to be okay with me having other sex slaves? There's only one way to find out. "Hey, Mom. Let's say that besides you and Rachel, I had other women who were my sex slaves. Would you be okay with that?"

"You mean, like you have a harem of sex slaves? Well, I guess I wouldn't mind that. I'm already sharing you with your sister. But how would you convince other women to be your sex slaves? It's not like there's a tradition to make other people who aren't your family into sex slaves."

"Uhh... Actually, there is. Since I'm uhh... The second-born child and a male, I can claim any woman I want as my sex ****. Not many people know about that part of the tradition."

"Oh! Well, if it's tradition, then I'm alright with you having other sex slaves."

I look at Rachel and ask, "What about you, sis? Are you okay with me having a harem of sex slaves?"

"I don't care how many women you convince to become your sex ****. As long as you remember to fuck me, I'm happy. Speak of which. Can you please fuck me now, Master?"

"Of course. Mom, unwrap your legs around my waist."

Like the good sex **** she is, Mom obeys my command. She makes room for Rachel to lie on the bed and spread her legs. As I position the tip of my cock close to the entrance of my sister's pussy, Mom says, "If you were to turn another woman into your sex ****, Master, who would it be?"

I take a moment to think before I reply, "I don't know. Do you know of a sexy woman who I could turn into my sex ****?"

"Hmm... Well, I do know someone."

A/N: I hope you all enjoyed the chapter. Also, thank you all for getting this story to more than 1,000 likes and more than 500 favorites. Now, for the next few chapters of this story, I'm going to be working with someone to write a storyline idea he suggested to me months ago. Hopefully, you'll all enjoy it when I publish it. I hope you all have a nice day.