This is Greg and Sybil from Michael Rosen's book Sexual Portraits available at Amazon. - Image by Michael Rosen
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Total Power Exchange

also known as Absolute Power Exchange, TPE

A relationship in which one person surrenders control to another person for an indefinite duration, and in which the relationship is defined by the fact that one person is always dominant and the other is always submissive. One of the more extreme forms of power exchange.