I can’t focus on work with her sitting across from me, that tight skirt riding up her thighs. She catches me staring and gives a little smirk, then leans over her desk, her blouse gaping open to show off those heavy tits. ‘Having trouble concentrating?’ she whispers, so low only I can hear. ‘Maybe you need a little release.’ My cock is already straining against my pants as she licks her lips, her hand sliding under her desk. I know she’s touching herself, imagining my thick shaft filling her mouth. ‘Stroke it for me,’ she breathes, ‘right here, no one will know.’ Her dirty words are like a drug, making me harder as I palm my bulge. She’s a fucking slut in that prim office wear, and she knows exactly what she’s doing. ‘I want to taste your cum,’ she hisses, ‘shoot it all over my tits.’ I’m so close, her voice driving me insane as she keeps whispering filth. ‘Come on, baby, let go for me.’ And when I finally do, she watches me with hungry eyes, licking her lips like she’s savoring the thought. That’s my naughty office lady, always ready to help me ejaculate with her dirty talk.

Fuck, look at Suwa-san. She’s got that mature, professional vibe with her glasses and suit, but you know what’s hiding underneath? An 18cm cock that’s ready to tear my tight ass apart. She’s the reliable big sister at work, but when we’re alone, she becomes the dominant transsexual bitch I crave. Her first day at the office, and she’s already bending me over her desk, sliding that thick shaft into my waiting hole. I can feel every inch stretching me, filling me up like nothing else. She fucks me hard, her glasses fogging up as she pounds my ass, whispering dirty commands in my ear. I’m just her office slut, taking that massive dick like a good little bitch. The mosaic is gone, and I can see every detail of her cock glistening with my lube. She’s not just a colleague; she’s my personal depraved fantasy come to life.

I can’t believe I’m finally getting to fuck Suwa-san, the new systems department hire. She looks so professional in her glasses and office clothes, but I know what’s hiding under that skirt. Her 18cm cock is already straining against her panties, and I can’t wait to get my mouth around it. She’s got over ten years of social experience, but right now she’s just a slutty transsexual OL who needs to be taught a lesson.

I push her onto the desk, her glasses askew, and rip her stockings apart. Her thick, hard dick springs free, and I wrap my lips around the tip, tasting her precum. She moans, trying to maintain her composure, but I know she’s loving this. I take her whole shaft down my throat, gagging on it, while she grabs my hair and fucks my face. Her balls slap against my chin as I worship her cock like the good little office whore she is.

After I’ve sucked her dry, I bend her over the desk and spread her ass cheeks. Her tight hole is begging for my cock, and I ram it in without lube. She screams, but I don’t care. I pound her ass like a animal, watching her dick flop around with each thrust. She’s cumming again, her load splattering across the paperwork. I pull out and shoot my own cum all over her glasses and face, marking her as my personal office fucktoy.

The tension has been unbearable all week, ever since she leaned in and whispered those filthy instructions right into my ear. I’ve been locked in my room, obeying every single command from the neighbor sister, my hands trembling as I stroke myself to the thought of her watching. It’s a close-up view of pure desperation, with her voice guiding me through each agonizing moment—telling me when to go slow, when to speed up, and when to just let go completely. I can almost feel her breath on my neck, imagining those big tits swaying as she taunts me from the other side of the wall, knowing I’m nothing but her obedient little toy, jerking off on her schedule like a pathetic cuckold who lives for her approval.

Every session is a torturous blend of pleasure and humiliation, with her JOI echoing in my head as I focus on the slick sounds of my own hand working over my cock. She’s the older sister I never had, but instead of comfort, she offers this twisted masturbation support, pushing me to edge for hours until I’m a sweaty, whimpering mess. The thought of her laughing at my weakness only makes me harder, my balls aching with the need to cum, but I hold back because she said so—her words are law in this depraved game. I picture her big tits bouncing as she masturbates too, maybe with someone else, and that cuckold fantasy drives me wild, fueling my solo work until the room reeks of sweat and lust.

By the end of the week, I’m a broken shell of a man, but I don’t care because her close-up guidance has rewired my brain to crave this shame. Each stroke is a tribute to her dominance, a solo act that feels like a public display of my submission. The big tits, the older sister roleplay, the relentless masturbation support—it all melts into a blur of ecstasy and degradation, with me as her willing slave, jerking off on command until I finally explode, thinking only of her smug smile and the knowledge that I’ll do it all over again tomorrow.