Two women who self-identify as 'cruel'. That's good. Two others who make chastity permanent. That's better. The thought of permanent frustration and sexual servitude is chilling (yet exciting).
Quite different permanent chastity inflictors though. One does it to release sweetly frustrated men into the world; the other simply for her own desires.
Good point. One for pay and the other on a whim. Just think of how the guys must feel when they understand that there's no way to reverse their chaste state.