Groper Train: One Shot in the Morning: Yoriko hears an unexpected story from lawyer Sanada. Her great-aunt, who lives in America, says that if Yoriko marries Daizaburo, she will inherit all of her 2 billion yen inheritance. However, Yoriko has never him and does not know where he is. All she knows is that he is a habitual groper and has a star tattoo on his groin. With the help of her best friend Ryoko, Yoriko gets on the train and approaches a group of men...