Day 4

Mayu woke you up even earlier than yesterday, already wearing the collar and nothing else. Her eyes had a feverish, excited gleam.

“Today’s the day you record me,” she whispered, almost trembling with nervous arousal. “I want everything saved. Every dirty sound, every time I cum, every time you fill me… I want to watch it later like the perverted little sister I am.”

She helped you set up her ring light, phone, and a small tripod. You positioned the cameras at multiple angles, one close-up for her face and collar, one wide shot for her whole body, and one focused between her legs. Mayu checked the framing herself, blushing furiously when she saw how exposed she would be.

“Hit record,” she said, voice shaky but determined.

The red light blinked on.

Mayu knelt in the center of the bed on all fours, ass up, back arched deeply, collar tight around her neck. She looked straight into the camera and spoke in her soft, breathy voice:

“Hi… I’m Koma Mayu. And today… my step-brother is going to ruin me again.”

You started rough from the very beginning.

You grabbed her by the collar and yanked her forward, shoving your cock straight down her throat. The close-up camera caught every detail, her eyes watering instantly, throat bulging, thick strings of saliva pouring from her stretched lips as you face-fucked her without mercy. Mayu gagged loudly, the wet choking sounds echoing clearly for the recording.

While you used her mouth, you reached back and shoved two fingers into her already dripping pussy, then three. You fingered her roughly until she came hard with your cock still buried in her throat, her screams muffled and vibrating around your shaft.

You pulled out, slapped her face with your wet cock, and flipped her onto her back. Spreading her legs obscenely wide for the camera, you buried your face in her pussy, eating her out sloppily while the lens caught every lick and suck. Mayu’s moans were loud and shameless now.

“Film my pussy… please… show how wet I am for my step-brother…”

You grabbed the biggest dildo from her collection and, without warning, slammed it balls-deep into her cunt in one thrust. Mayu screamed, back arching violently. You fucked her mercilessly with the toy while stroking your cock above her, then switched, pounding her pussy with your real cock while making her suck and lick the huge dildo clean of her own juices.

“Talk to the camera,” you ordered.

Mayu, voice breaking between moans, looked into the lens:

“I’m such a dirty girl… I let my step-brother fuck me raw… I love it when he stretches me… I’m addicted to his cock now… my toys aren’t enough anymore…”

You uncuffed her temporarily only to tie her in a new position,  wrists bound to her ankles in a frogtie, legs spread wide open, completely helpless. You angled the main camera right between her legs for a perfect view.

Then you brought out the fucking machine again.

You set it to a brutal pace and let it hammer her pussy while you straddled her chest and fucked her tits and mouth at the same time. The machine made wet, rapid squelching sounds as it destroyed her hole. Mayu came repeatedly, squirting all over the silicone cock and the sheets, her body jerking helplessly in her bonds.

You switched the machine to her ass.

While the thick dildo relentlessly pounded her tight little asshole, you fucked her pussy raw. Mayu’s eyes rolled back, tongue hanging out, drooling uncontrollably as she experienced the most intense double penetration yet. The cameras caught everything, her gaping holes, the way her stomach bulged slightly with every thrust, the way her small body shook like a ragdoll.

You came hard inside her pussy first, filling her until it overflowed and leaked around your cock. Then you pulled out and shoved into her mouth, making her taste the mix of her juices and your cum while the machine continued fucking her ass.

By the time you finally turned the machine off, Mayu was completely broken again. She lay there twitching, holes ruined and leaking, collar wet with spit and sweat, body covered in marks.

You uncuffed her and pulled her close, still recording.

Mayu looked straight into the camera with hazy, cum-drunk eyes and whispered hoarsely:

“I’m completely addicted… I don’t want this week to end.”

You stopped the recording for now.

Mayu curled up against you, trembling, sore, and satisfied. She kissed your chest softly and murmured:

“Tomorrow is our last full day before they come back… I want you to edge me until I lose my mind.”

She looked up at you, shy but determined.

“Use the fucking machine… blindfold me… cuff me spread-eagle on the bed… and edge me for hours. I don’t want to cum until I’m begging and crying. I want to be a shaking, dripping, desperate mess by the end.”

She bit her lip, pressing her soaked pussy against your thigh.

“Promise me you’ll be cruel tomorrow?”

Mayu fell asleep quickly after that, exhausted and leaking your cum, the collar still around her neck and the taste of sex heavy in the air. The phones were full of explicit videos, hours of her getting destroyed on camera.