Use the app on Kristen

I quickly get dressed and grab my phone as I leave mom in the bedroom. I walk into the living room to see my sister sitting down on the couch, watching tv. Kristen sees me enter the room but doesn’t say anything to me. Instead, she just continues to watch her, completely ignoring me. I open up the Alteration app on my phone and select Kristen’s name. In the textbox, I enter, Kristen doesn’t like wearing clothes when she inside the house. She doesn’t mind showing off her naked body to her family. “Hey Kristen, you still have your clothes on. I thought you hated wearing clothes inside the house.”

“I do, I don’t know why I’m even wearing them.” Kristen gets up off the couch and starts stripping her clothes away. She tosses every piece of clothing to the side until she’s no longer wearing anything. Even though I know that the app actually works, I’m still shocked by the fact that this is even happening. Before my sister goes to sit back down, I quickly stop her. “Hey Kristen, turn around for me. I want to see your large ass.”

“You would like that, wouldn’t you John? Well, consider yourself lucky that I don’t mind showing off my body to you.” Kristen turns around and bends over, showing me her incredibly large ass for me to see. While I have thought about my sister’s ass a few times before, I never thought Kristen would ever willingly show her ass to her own brother. “What do you think, John? Ever seen a girl with a bigger and better ass than me?”

“No, I haven’t. Your ass is definitely the biggest I’ve ever seen.” I go to use the app to make it so Kristen doesn’t mind having her brother fuck her, but an idea pops into my head. I begin to think about how hot it would be if I turned Kristen into dad’s personal fuck-toy. Mom is already my fuck-toy as I decided I’m not going to let dad have sex with her anymore. So, I guess letting dad have his own fuck-toy would only be fair. Then again, I could claim Kristen all for myself.