Kyofu joshi koko: Animal dokyosei (1973)

Skinny East Asian girl with long black hair is on top first, riding a guy with short black hair. He’s lying back on a bed in a dark room, hands on her hips, letting her control the pace. She leans forward, bouncing slow at first, giving a clear view of his dick sliding in and out. Camera stays tight, no cuts, just steady focus on the movement and their faces. After a couple minutes, she flips to all fours, and he gets behind her, pulling her back with one hand and driving in deep. Her ass moves hard with each thrust, slim body rocking forward and back. They keep it raw, no quiet moments — he’s grunting, she’s moaning, both fully into it. Lighting stays low, just enough to see sweat on their backs and the way her hair sticks to her neck. Ends with him still pounding her, no cumshot shown, just the two of them going nonstop.