Dad's car finally disappeared down the street Sunday night, taillights fading like a threat being lifted. The second the garage door closed, Sophia locked the front door, turned to us with that calm, predatory smile, and held up her phone.
"Time to start the vault," she said softly. "Every training session from now on gets filmed. High quality. Multiple angles. For our private collection… and for motivation."
Mia's eyes lit up like fireworks. She was already stripping in the hallway, tank top and shorts hitting the floor. "I'm the star," she declared, pointing at the camera. "Mommy can direct, but I want my face, my tits, my pussy on every frame. I'm gonna look so fucking hot draining Alex that you'll watch it on repeat."
Sophia laughed, low and warm, already setting her phone on a tripod in the bedroom. She adjusted the angle so the bottom bunk was perfectly framed, then pulled out a second phone for close-ups. "Fine, princess. You be the star. I'll direct. But remember—Mommy's lessons are what make you look good."
She hit record. The red light blinked on.
"First video," Sophia announced, voice smooth and instructional. "Title: Mommy Teaches Bratty Stepsis How to Milk a Cock. Action."
Mia climbed onto the bottom bunk on her knees, ass up, back arched like a pro. She looked straight into the main camera, licked her lips, and wiggled her hips. "Hi, future me… watch how I make my stepbrother explode."
Sophia knelt beside her, completely naked, heavy tits swaying as she grabbed my cock and stroked it slow and firm right in front of the lens. "Lesson one: eye contact with the camera while you work him. Show the viewer how much you love being watched."
Mia dove in immediately—mouth wide, throat open. She took me deep on the first try, gagging herself for the camera, spit already dripping down her chin in shiny strings. Sophia held the second phone right beside Mia's face, zooming in on her stretched lips and bulging throat.
"Deeper, princess. Let them see your throat work. Good girl… now hum. Feel how his cock jumps when you do that?"
Mia hummed loud and filthy, vibrations traveling straight to my balls. Sophia reached under and cupped them, rolling them gently while she coached.
"Watch her technique, viewers. She's aggressive—perfect for a brat. But notice how she keeps her eyes on the camera even when she's choking. That's star quality."
Mia popped off with a wet gasp, strings of spit connecting her lips to my throbbing cock. She looked straight into the lens, eyes watering but gleaming with competition. "Your turn to watch, Mom. I'm gonna milk him dry in under two minutes."
She spun around, reverse cowgirl on the bottom bunk, and sank down onto me in one smooth, greedy drop. The camera caught everything—her tight pussy stretching around my shaft, the way her ass rippled when she started bouncing, the shiny trail of her juices already coating my balls.
Sophia moved behind the tripod, directing like a pro. "Faster, baby girl. Slam that ass. Let the camera see how wet you get when you're being filmed. Alex—grab her hips. Show them how deep you go."
I did. The bunk creaked loud and rhythmic. Mia rode like the star she wanted to be—tits bouncing, head thrown back, moaning straight into the mic. "Fuck— he's so hard for the camera— gonna make him cum so much it leaks out on video—"
Sophia knelt beside us again, phone in hand for the close-up shot. She reached between Mia's legs and rubbed her clit in tight circles while Mia bounced. "Milk him, princess. Squeeze that pussy. Show the viewers what a good little cum-slut stepsister looks like when she earns her load."
Mia's walls fluttered hard. She slammed down one final time, grinding in filthy circles, and I exploded—thick, heavy ropes pumping deep inside her while the camera captured every pulse. Cum immediately overflowed, white and creamy, dripping down my shaft and onto the sheets in thick globs.
Sophia zoomed in tight. "Perfect. Look at that creampie. Now push it out for the camera, baby girl."
Mia lifted off slowly, reached back, and spread her pussy lips. A massive glob of my cum poured out in a slow, obscene waterfall, dripping straight onto the lens of the close-up phone. She moaned, proud and bratty, staring right into the main camera.
"See that? That's what a star does."
Sophia stopped recording, kissed Mia deep and filthy—tasting me on her tongue—then turned to me with cum-glossed lips.
"First video in the vault. We're going to watch it together later while we film the next one. Tomorrow we shoot Mommy and Stepsis Compete for the Biggest Load on the kitchen counter… with Dad's weekend still fresh in our minds for extra risk."
Mia grinned, still leaking, and blew a kiss at the camera.
"Next one I'm directing. And I want toys."
Sophia just smiled wider, already planning the folder name on her phone.
The secret video vault was open.
And the training sessions had just become permanent entertainment.