The Insect Woman - 1972 - 6/10
AKA - Chungyo // 충녀

Too late, fellow patients warn the new arrival about female insects.
The ones who devour male partners after mating.
Professor Lee’s wife dominates him in business and in the household, leaving him impotent.
Meanwhile, one of his teenage students, forced to provide for her family, starts work as a hostess.
Meaning, casual prostitute. And as a virgin, her first time will cost plenty.

Professor and student start an affair, restoring his prowess, of which his manipulative wife is aware.
She even pays the girl an allowance.
Then things start to get surreal.

Pay attention all you want, the plot steadily loses cohesion.
Until the police arrive.
Strange Korean melodrama, desperately in need of a restoration.