DASD-963 Minami Hatsukawa in a fantasy about a male teacher who becomes a beautiful woman

A male teacher, ridiculed by a colleague for being unpopular, takes a medicine bought from a suspicious woman and transforms into a beautiful woman, with his genitals still growing. The transformed teacher is then attacked by a group of men who take advantage, leading to an orgy with violence and pleasure beyond capacity. A colleague witnesses the scene and threatens to expose the secret.