An abnormal fantasy depicting ordinary men transformed in body and mind by a mysterious woman clad in crimson, gradually descending into the pleasure of masochism. Mio Kuraki portrays a mystical woman who relentlessly stimulates the men anally, initially met with resistance and discomfort, but slowly seduces them toward the brink of ecstasy. As the process unfolds, the men writhe in pleasure like women, climaxing in explosive orgasms. Step by step, their minds are completely transformed into those of women.