Mistress Ruiko – Kneeling on the Abacus (Full Version) – Heel Torment, Pulses, and Caning

Mistress Ruiko has her sub kneel on an abacus with his hands tied behind his back. The sharp beads dig into his thighs under the pressure of his own weight, and she intensifies the torment by stepping on them with her high heels. His legs are pinned —there’s no escape between the abacus below and her heels above.
While he’s immobilized, she clamps his nipples and administers pulse stimulation, followed by a harsh caning.
Mistress Ruiko then presses her stiletto heels into the marks left by the cane, and the sounds of his moans bring a smile to her face.