feminization

维基

Also called "sissification", feminization is a type of fetish where the focus is on a man (particularly androgynous men) crossdressing and being groomed into behaving more feminine. Is often done as either an act of humiliation, as the result of hypnosis, or to establish dominance (especially in femdom relationships). Some examples may even include medical alterations, like those caused by hormone therapy or more supernatural means, though it needs to be clear the character was originally male.