"For the records, I think I might test some more if this suit can do," your girlfriend/mom thinks herself as she wants to continue to explore the suit while you're still taking a bath. "Hmm,... Having his MILFy mother's body like this is so much fun, but I wonder if this suit can change me into another one. Let's try something more energetic. Command: Transform Into His Bitchy Sister, but keep me remember myself. God, hope this worked."
When she finally commands the suit and is scared like the last time she turned into your mother, the suit begins to activate as she begins to shrink into the daughter. Her signs of age disappear while her brown hair becomes lighter as it's now blonde. Her THICC body is slim away as her proud G-cup breasts shrink to a perky C cup and her ass becomes smaller, but rounder. Her hips stay wide enough to give her a sexy shape that compliments her now very thin waist and flat tummy. Her face finally shifts to resemble your mother but belongs to your little slutty and bratty sister with puffy lips, dainty nose, and bright blue eyes. "Wow, that was, like, a hell of a fucking ride..." your girlfriend responds with her new high-pitched and bitchy tone. "Holy shit, it's worked. I'm like, myself, but like, become my stupid bro... I mean, like, boyfriend."
Your girlfriend/sister's excited to see the suit worked as she's commanding it. "Fuckin hell, for a moment, I was like, thought to myself that I completely become his bitchy sister without, like, keeping my consciousness." She replies to herself. "But still, I'm like, now know how to use this suit. And come to think of it, this body is, like, super sexy and stuff, but still like, make me like, a total bimbo and bitchy attitude."
While she examines herself to her new look, you are finally done as you step out of the bathroom and see your girlfriend/mother is now your little sister. "Well, this is unexpected." You respond. "I didn't know my "precious little sister" came to visit me."
"Well, like, look who is it. If this isn't like, my loser brother, I would be like, happy to see his tiny dick." She teases like your bitchy sister usually does.
"Haha... very funny, babe. Didn't know you could act like that little bitch." You chuckle a bit and roll your eyes.
"Well, like, I didn't, bro. It's just like, the suit just forced me to change mentally too, but like, I was like, able to keep my mind when I change." She explains the thing about the suit.
"It must be when you command the suit to "become" or "transform" into anyone not just physically, but mentally as well. But there's another tip for you, you don't have to command the suit to change you mentally, you can just command the suit to look like a person you want to change into."
"I see."
"But hey, it's still worked. You managed to regain and keep your mind." You say.
"I know, right? But like, the suit can be, like, a pain in the ass," she replies with her bitchy tone. "Anyway, now that, you're like, out of the shower. Are you like, ready to fuck your sister, bro?"
"I don't know... Are you ready to handle your brother, 'sis'?" you ask back.
"I think.. that you should totes just fuck me already," your girlfriend/sister counters with her bitchy voice as she starts to strip off your towel around your hips with a dainty hand, her long fingernails now tipped with pink nail polish, your sister's favorite. You stopped fighting as the part of you has always desired your beautiful, if shallow and bratty, sister, getting extremely turned on by the sight of her pulling out your dick with her small, manicured hand.
You stare into her eyes, now ocean blue, completely different from your mom and your girlfriend, yet still so similar, as she clambers on top of your dick and starts riding you. She starts moaning in her high-pitched voice, and her wide hips press her now beautiful, heart-shaped rear into your groin. You glide your hand across her fit stomach and her C-cup breasts, making her shiver with lust. "Yes, big bro. Fuck me like the fucking whore I am!" your GF/Sister screams in pleasure as she plays with her now wavy, dirty blonde hair, upon which you release your semen.
"O-M-G, that was, like, super hot. Thanks again for satisfying my hormones, big bro." Your girlfriend/sister says as she cuddles up next to you.
"Anytime, sis." Grabbing her by the ass and pulling her in for a kiss.
"So, like, what would you like to do with this suit?" She says, placing her manicured hand on your chest and looking into your eyes.