An unexpected double booking leaves exclusive performer Tomoe Shiraiwa with only four hours—14,400 seconds—to shoot, so every last second is devoted to making her cum. She endures relentless follow-up pounding that changes speed, a submissive man turning the tables, merciless orgasms while she desperately holds in her pee, and a four-person gangbang. Even when her sensitive, busty body is convulsing and she cries that she is already cumming, the thrusts never let up. No surrender is accepted as she is driven through a nonstop orgasm marathon until time runs out.