Making sounds, relaxing from pleasure, orgasming—none of it is allowed. Pushed to the very brink of endurance, an explosive pleasure awaits beyond the limit. Silent sex [suppressing moans], no-kneeling sex [standing still, holding back], no-orgasm sex [forbidden to climax]. The path to ecstasy born within these restrictions leads to entirely new stimulation. Here lies the ultimate experience where endurance transforms into pleasure.