Mibôjin geshuku: Shitamo kashimasu yojôhan (1977)

One of the women has long black hair and glasses, lying in bed like she just woke up or was resting when things started. They’re both slim with small tits, natural bodies — not pornstar types, more like real people fucking in a low-lit personal space. The sex is straightforward but raw: missionary position, slow grinding, then switching to doggy style with lots of close-ups on the ass and pussy as they go at it. You see one of them adjusting her glasses mid-scene, which adds to the realistic, intimate vibe. There’s creampie at the end, heavy and messy, leaked onto the sheets. Camera stays mostly static, medium and close shots, nothing fancy — just direct bedroom action with zero pretense.