Katharina und ihre wilden Hengste, Teil 1: Katharina, die nackte Zarin (1983)

Katharina’s the main girl here — German name, fitting look, mid-30s, curly blonde hair, curvy but tight body. Starts off brushing her teeth in the bathroom with a couple other slim white girls, all getting ready like it’s a normal day, but then it turns into a full-on gangbang. The first real scene shows her riding one of the dudes bareback, up and down, slow grind, deep eye contact — you can tell she’s into it. Later switches to doggy, takes it hard from a gray-haired guy in a hat while another waits his turn. Group scene in the bedroom with multiple guys and girls, some are just jerking off watching, others jump in. Final stretch has her on her back with a creampie shot — thick load on her stomach. Camera work is steady, close-ups during facial and cumshot, wide shots during group parts. Not much talking, just straight sex, natural pacing.