[Kaki no Tane] Anal Kaihatsu Shisugi Desu! [Kuraudo]

A confident, busty girl discovers a shocking anal training device that forces her to confront an overwhelming wave of pleasure, as she pushes past limits with frantic, self‑stimulating bursts. The intense visuals capture her escalating ecstasy and the strain of a rapidly widening opening, heightening the tension of each painful yet exhilarating moment. This solo, x‑ray‑enhanced story blends raw masturbation with the visceral drama of anal prolapse training, delivering a relentless, climactic experience.