Main is bat ka phayda uthati hoon ki mere mammi-papa bahar ge aur mainne apne sautele bhaee ko choda

One afternoon my parents went out and left me in charge of my stupid stepbrother, I was very horny and my stepbrother was starting to awaken a sexual feeling in me, every time I saw him I got excited to such an extent that I had to go masturbate and now at last that we are alone it is time to take advantage and fuck him