Your little step-sister is a big bully. So is everyone else in school. But you're done being teased, you have a plan to make every girl obsessed with you, and it starts with your step-sister -- accidentally. Your step-sis is pounding on the door, upset you're spending too much time in the bathroom as she's urgent to pee, but you're doing something urgent too, you're scientifically growing your normal penis into a god cock, one that will control any girl who looks at it and turn her into your desperate cock slave. You leave and she demands to know what was taking you so long, so you tell her the truth, but of course she doesn't believe you. She yanks your towel away and your cock immediately alters her mind. She's infatuated and wants to touch it. You didn't intend to be in such a taboo situation, but might as well try your new power out over the family bully. You tell her she can only touch it if she "proves herself" and she eagerly humiliates herself by giving herself a wedgie, showing her tits, and you fully test your now power by seeing if she'll pee her panties in front of you. Not only does she do it, it makes her insanely horny. You let her touch you, which turns into an obsessive. worshipping blowjob. Now the real fun begins, she wants to give you all of her body, and lays on her back as you fuck her missionary style for 20 mins (your god cock has wild stamina too you find!) during this, she loses herself completely, your cock gives her numerous orgasms and fucks her mind too, as she eagerly realizes her new identity is "little step-sister slave". She can't resist begging for your "god seed", and you fill her-- then finding one last thing about the god cock, it programmed her to humiliate herself as a way of pleasing you, so when you pull out she not only spills a huge creampie, but her body freezes and she can't help but pee again too!! Ohhh you're gonna have fun with this~ ♥︎ ♡FEATURES♡ little step-sister x big step-brother, taboo roleplay, cock alteration, brat to slave conversion, humiliation, wedgie, piss, handjob, blowjob, messy cum in mouth, cock worship, obsession, pov missionary, 20 MINUTE SEX SCENE, a nice big creampie where I pee at the same time!!