2 Mistresses Take Over the Slave With Facesitting

The slave has brought a new toy with him, a tight latex mask. A single small hole allows oxygen into the mask. Even without playful and sadistic mistresses, wearing this mask is already a strenuous endeavour.

The slave lies bound on a mat. He is already wearing the mask when the mistresses bend over him and make him aware of his predicament. They now determine how much air he gets. If any at all...

They take turns placing their fingers over the small opening, leaving the slave nothing to hold on to. He struggles and writhes in his bonds when he realises how scarce his supply is becoming. Fear and panic rise within him until the mistresses release the hole again.

To celebrate the new mask, the slave is given the honour of getting very close to his mistresses' pussies. One after the other, the ladies sit on his face, covering the hole until the slave squirms again. He squirms frantically and then takes in nothing but pussy and arse.

When will his mistresses free him from this situation?