Sisters forced to live with their stepfather after their mother's remarriage experience a horrific ordeal in the back of their throats. The penis inserted into the sister's vagina is then moved directly into the younger sister's throat, and vice versa, resulting in PtoM incestuous acts. Both endure simultaneous deep-throat training and continuous extreme throat fucking. Without any rest, they are daily coerced into sexual servitude, becoming slaves. Their ultimate fate is...
