Entrails of a Beautiful Woman (1986)

This is a story about a pretty psychologist (Megumi Ozawa) who is raped, murdered, and dismembered while trying to avenge the suicide of a patient who was raped by a Yakuza gangster. Buried along with the remains of a rival gangster, Ozawa somehow melds with his corpse and comes back from the grave as a hermaphrodite zombie. A bloody and sadistic revenge is ahead.