The Training of Kristine, Day Four

They've got her wrists cuffed over her head, body stretched tight across the bench. Her ass cheeks spread wide, pink and raw from the beating. He steps in close, thick cock already leaking, and lines up behind her. One push and he's buried deep in her asshole, no mercy, no slow build. She gasps, then moans, legs shaking as he starts to pound. Every thrust stretches her wider, the slap of skin loud in the quiet room. Sweat runs down his chest and drips onto her back. He grabs her hair, yanks her head back, fucks her harder. She takes it all, hips rocking to meet him, ass gripping him tight. He slams in balls-deep, holds there, grinds, then pulls out and drives in again. The rhythm never slows. She bites her lip, breath ragged, while he uses her hole like he owns it.