In the dimly lit room, Diana and Kate stand, legs trembling, as Dr. Lomp circles them like a predator. Their small tits heave with each breath, nipples hard and aching. Dr. Lomp grabs Kate's chin, forcing her to watch as Diana receives the first lash. The whip lands with a sharp crack, leaving a thin, red line across Diana's delicate pussy lips. Kate whimpers, her own pussy clenching in sympathy. Dr. Lomp smirks, knowing she's hit the right spot. She continues, alternating between the sisters, each lash drawing a gasp, a moan, a plea for more. Their pussies glisten, dripping with desire, as Dr. Lomp expertly pushes them to the edge of their limits.