The moment she tried to shout "Help! I'm being groped!", she lost all her strength and couldn't move as pleasure ran through her body. Inside the train she casually boarded. Reiko couldn't call for help and became a helpless victim of groping. Anger, fear, humiliation. Every time that day flashes back, various emotions well up. But on the other hand, Reiko herself was puzzled that she couldn't forget the pleasure that was etched into her body. In her daily life where her husband no longer embraces her, Reiko came to a climax for the first time in a long time that day. And Reiko decides to ride that train again in order to become a comforter for the gropers.