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The Machine's Mercy

by @infin8fun

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6 chapters

~15 min read

Thomas Blackwood's workshop isn't for fixing machines—it's for breaking limits. Rachel, pale and freckled, trusts her friend enough to let his restraints tighten, his insertions stretch, and his vibrations push her past multiple orgasms into the territory where pleasure and endurance blur. She always survives, but only barely.

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MEET THE CHARACTERS

Thomas Blackwood

A 48-year-old precision engineer whose workshop has evolved into something far more intimate—a laboratory of restraint and endurance. He has silver-threaded dark hair, sharp blue eyes that miss nothing, and the steady hands of a man who builds his own machines. There's no cruelty in him, only curiosity; he watches each woman find her edge with the quiet reverence of a sculptor discovering what marble can become.

Rachel O'Sullivan

A 24-year-old redhead with pale, freckled skin that flushes pink at the slightest provocation and a body built for endurance—tall, fit, with full breasts and the strong thighs of a former swimmer. She's Thomas's friend, curious enough to volunteer, stubborn enough to see it through, and entirely unprepared for how deeply the machines will reach into her. Her green eyes go wide and glassy when she's pushed past thinking into pure feeling.

Heather Kowalski

A 26-year-old with dark, wavy hair and a full, soft body that makes her look gentler than she is—she's the friend who reads the fine print, who knows exactly what she's walking into and chose it anyway. Shorter than Rachel, with brown eyes that sharpen when she's assessing a machine's mechanics, she's drawn less to sensation than to the geometry of surrender: the precise angle of a suspension line, the weight distribution of a predicament. She wants to be held in place so completely that even thinking becomes optional.

Aimee Callahan

A 34-year-old strawberry blonde with fair, luminous skin and the soft, full curves of a woman who recently gave birth—she's still learning her new body, still startled by the weight of her breasts and the tenderness that lingers. She accepted Thomas's invitation thinking it was a wine-and-engineering tour, and now she's tied to a chair with her blouse open and milk beading on her nipples, mortified and achingly aroused. She discovers, to her own surprise, that she has no bottom edge—she takes every inch, every stretch, every vibration, and asks for more with her eyes before her voice catches up.

EXPLORE CHAPTERS

The Chair Accepts Her

The leather is cool against Rachel's bare back as Thomas cinches the last strap across her thighs, her wrists locked to the armrests, her pale freckled chest already rising fast. He fits the curved ac

The Question Lingers

Rachel sets the empty mug on the stool beside her, her fingers still trembling slightly, and looks at Thomas across the workshop's dim light. He hasn't moved from his stool, his own tea forgotten, his

Chapter 3

Chapter 3 moves to Heather, Rachel's friend, who contacts Thomas early. Even though he'd agreed to let her watch Rachel on Saturday, she sets up an appointment for Thursday evening where she agrees to

Saturday Arrives

Rachel's bare back presses against the cold steel of the chair as Thomas's fingers work the first strap beneath her breasts, cinching it snug across her ribs. He adjusts the second strap above her bus

Chapter 5

About an hour after Rachel leaves, Aimee contacts Thomas. She's a single mother, knows she doesn't have time to add a new man in her life, but Rachel has told her a little about the first visit, she t

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