Romance! A crazy, overprotective brother! And...spies?!Searching for Mutsumi’s father, Momo Yozakura, Taiyo infiltrates an excursion steamer connected to Tanpopo. For all his work, he finds no clues. The disappointing failure of a mission changes into an enchanting encounter when he meets a beautiful young woman on the train. But she is no ordinary girl…she is White Snake and a member of the Hazakura Battalion!