>>34628384Mindbreaking is basically tormenting someone (either emotionally, phisically or both) so much you make their mind snap. They turn into shells of their former self, their body is alive but their mind is pretty much dead, not really "here". Have you watched Game of Thrones? What happens to a character named Theon Greyjoy is basically that.
Consensual mindbreak is not usually a thing unless someone is masoquistic or depressed enough to want to pretty much just leave this mortal plane.>>34628402 