Hirusagari no jôji: Uwasa no kangofu (1974)

Starts with a brunette MILF in lingerie standing by the bed, playing with her tits while giving you that “come here” look. Then cuts to a skinny Asian girl with long black hair lying on white sheets, fingers sliding down her body, nipples hard. The real fun kicks in when the nurse roleplay starts — this chick in a tight white dress and cap leans over a guy in a doctor’s coat, clipboard in hand, acting all professional while grinding against him. Best part? The hospital scene where three nurses (blonde, brunette, and another Asian) crowd around a dude in a gown, one adjusting the sheets, another stroking his dick, and the third taking notes like it’s a real exam. Camera gets right in there for close-ups of the oral and fingering. Ends with two brunettes in lingerie, one on the bed, the other kneeling beside her, tongues and tits everywhere. Lighting’s soft but clear enough to see everything — no shaky cam, just straight-up action.