Overcome by a strong urge to urinate, Yuuka ended up wetting herself on the train. The moisture spreading up her thighs, her skirt staining and changing color, was impossible to hide. She was subjected to merciless stares of curiosity from the surrounding passengers, and the sound of smartphone camera shutters. It was unbearable... She couldn't take it anymore... Surrounded by passengers turned wolves in her extreme embarrassment, she collapsed. But at that moment, a man appeared to rescue her from her desperate plight. "Are you okay?" Deeply grateful to the man who spoke kindly to her, Yuuka never dreamed at that time that this man would lead her into an even deeper hell of humiliation...