Yo goes to visit Sen, who had been absent from school with a cold, where she discusses plans to fight against the twins for eel bentos in a few days. After another defeat by the twins, Yo and Ren learn from Ayame that they are the daughters of a chain store owner who came over from Yumehiro. Ren travels to Yumehiro to find out more while Ayame passes on Sen's message to the twins, although Sen's cold has gotten worse. Ren learns that, three years ago, the twins were driven out of Yumehiro by a brawler known as The Club of Hercules.