Unwilling from beginning to the end! But …. I like the idea of being under mind control to the point where you can not resist it, you are doing it physically, but psychologically you are aware that it is forced on you.

Some might argue that it would be same as blackmail, but I do not think it is.

In the blackmail it is subjects initial unintelligent decision that lands it into the situation where she (usually, cause I only read M/f stories ) keeps getting deeper and deeper not being willing to cut the spiral.

With mind control – it is out of the subjects hands = totally under control. But even when the subject is in that state, I like to see its inner struggle against the things she finds: degrading, revolting and obscene, but still she has to perform. More than physical pain, it is mental domination that turns me on.

And I do not care for happy subs that love to be beaten!

Just my personal preference!