“The next time you say that word, this will stop. You do understand that don’t you?” His voice had softened a little, but still held a timbre of...authority that brooked no nonsense.“And you are prepared to wear the brand and mark of your master?” His questions seemed annoying more than anything, but she supposed he had to be sure, because once done, it was irreversible.“I understand and comply. Please mark me the sole property of my master.” It was the pre-planned and practiced response required. You sounded like you meant it too.”I said, “Of course I meant it, you’re my sister.”Ally laughed and said, “You’re not getting out of it that easily. I know you meant it and I want you to keep proving it to me too.”I asked, “How can I do that?”Ally said, “By touching my boobs, butt, or pussy every chance that you get. Do it in front of Mom and Dad too if you think you can get away with it.”Confused I asked, “Why?”Ally smiled and said, “Because it’s sexy and it’s better than masturbating. I like. Eventually, it became my second self. I didn’t especially hate my male body, I just was never especially fussed about it or at home in it. I had no frame of reference on whether my cock was anything to write home about because my only reference point was through porn. During my later years, I started to experiment with my sibling’s clothes. Augmenting my body to make a more pleasing, more feminine body. I was a skinny little shit at the time and hadn’t broadened out and had the very attractive. There was a pause of nothingness, Laura waited and suddenly felt a shock of pleasure shoot through her pussy lips and into her clit as the mobile silently vibrated against her crotch. Mouth open Laura moaned loudly as she felt it vibrate again, it didn’t move but the shock waves it shot out was heavenly as it made the nerves in her pussy fire off their signals of pleasure.Laura arched her back as she felt her pussy begin to drip with juice, the mobile would not vibrate then suddenly start.