Shûdôjo Runa no kokuhaku (1976)

One of the girls has short dark hair and lies down with her neck wrapped in a cloth, her body partially exposed in low light. The other has long dark hair and a bare torso, clearly seen in brighter shots — her slim frame moves smoothly during close-ups. They interact closely in what looks like a hotel room, faces near each other, hands touching, one giving the other oral while lying on her back. Later, they’re outside near a pool, both in long dark hair and slim builds, walking and touching in daylight. The camera work is handheld, sometimes shaky, with one shot showing the long-haired girl walking indoors while holding the camera herself. The lighting shifts between dim indoor scenes and bright outdoor wide shots, giving contrast between intimate moments and more casual ones.