Beginning of affair swapping

A hospital welcomes its newest nursing addition, Yukari (Tomomi Segawa), who gets to stay in the first-year dorm on campus where having a man over will get you punished with a heavy hosing (“You dirty animals, stop resisting!”). Her rapport with her fellow nurses is put to the test when she ignores warnings and becomes involved with the head surgeon, Dr. Muraoka, who turns out to have a sinister side including a penchant for non-consensual sex and inappropriate use of cooking ingredients.