At those words, Kaiser raised his right hand high. He brought it down forcefully on Irene's left buttock. The sharp smack echoed throughout the room, clear and loud. Irene's skin immediately marked with an imprint, outlining the shape of his palm. Irene jolted violently, her entire body contracting suddenly.
The muscles in her thighs tightened, her toes curled. Her tongue instinctively stuck out of her parted mouth, hanging, as a surprised, hoarse moan escaped from deep in her throat.
"Ah… Ouch!"
Kaiser, without giving the pain time to spread, grabbed a thick handful of her hair, matted by the sweat running down her nape. He pulled firmly backward, forcing Irene to arch her back. Her spine curved.
Her body formed a pronounced curve, her chest thrust forward, her heavy breasts swaying freely, the hardened tips brushing the rumpled sheet. Her buttocks, already reddened, became even more offered, higher.
