Turn your older brother into a submissive sissy

As you hear your brother Jacob outside in the garden, you decide it's finally time to get payback for a childhood of bullying. You hide your still erect and needy dick in your panties and tenderly walk over to the window, seeing him mowing the lawn and posing for one of the neighboring girls he's been hitting on.

"Jacob, I need your help in here," you call out in a commanding voice, a slightly darker voice than your previous one, not that you currently would notice.

"Sure, Kim," your brother smiles at you and stops the mover before walking inside. The bastard always calls you Kim because he knows it triggers you. He's a real asshole when just you two are in the same room, but acts all peachy and friendly in front of others.

Well, your bastard of a brother is about to become a lot more peachy, you think to yourself as you hear him climb the stairs to your room, opening the door without caring to knock. "What is it, dickhead? I was this close to getting into that girl's pants," Jacob growls as you smile back at him, pulling out the ray gun and blasting it at him, thinking of all the things you wish he should become.

(08122020: updated image, old lost to time and tumblr)

A flash of light envelops him, and once the light dissipates, you find yourself looking at an effeminate girl with a lot of the features of your brother, wearing a top that accentuated her feminine curves and small breasts, while also revealing a small dick nestled inside a pair of sheer panties under a tight-fitting pair of daisy dukes. She looks around the room, confused for a moment, before you walk over and press your crotch against him.

"Get to work, slut," you tell him as you put a hand on his shoulder and guide him down to his knees. Her voice moans as her submissive instincts kick in, making her unbutton your jeans and pull out your meat, rubbing it up to a proper erection before she begins sucking on it. "Oh god, know how to suck cock Jacy," you groan and push a hand through her her hair, holding her in place and helping her set the pace.

Jacy mewls sounds of happiness around your cock from the compliment as you decide it is time to stick your cock where it truly belongs. "Present yourself," you say as you slowly pull her off your dick, leaving strings of saliva between your dick and her lips. "Oh, yes Kimmy," she mewls and pulls off her shorts and panties, licking her lips clean before moving over to the bed and presenting her soft and flexible asshole to you.

You put the tip of your dick against it, expecting this to be a slow and arduous process without any lubricant except your sissy sister's spit. You are not too surprised to find it easily sliding into your sister, who promptly begins to moan loudly as you begin to slowly slide in and out of her. You savor the experience, edging for minutes, before you decide it's time to bring an end to this, ramming your dick fast and furiously into your new sister's experienced asshole, making her limp dick bounce and drool dollops of pre-cum over the sheets. She screams in ecstasy as she cums, squirts of useless sissy cum pour out of her limp dick as you climax yourself, filling her ass with your dominant seed.

After a few moments, you pull out and leave your sister sitting with her ass in the air, observing her open asshole tremble and drip the cream just put into it down her useless balls and dicklet. "Clean up the mess when you've rested," you tell your sister, which she takes as permission to fall over to her side, where she idly begins licking your and her own cum off her inquisitive fingertips.

That was a nice way to spend half an hour, you think to yourself as you go to the bathroom to clean yourself up. Now, what to do next?