In the dead of night, an abnormal and lewd medical treatment unfolds in the examination room. M-female Mio sinks into pleasure, slowly losing control as she writhes in ecstasy, her body giving in to unrestrained lewdness in the ward, operating room, hallway—anywhere, regardless of who might see. Her anus trembles, convulsing from the massive volume of enema fluid churning deep within her colon, brought to the brink of collapse. In this darkly sensual, pleasure-filled space, her body draws ever closer to its limit.