The "Butterfly Sword", one of the thirteen weapons in the world, disappeared with the decline of the "Suzaku Gang", the largest gang in the world. Many years later, the new female leader of the "Suzaku Gang" had to seek the protection of the "Butterfly Sword" to avoid being chased by her enemies and came to the small town of "Tongshui". In the process of helping his sister find the "Butterfly Sword", his younger brother experienced a series of strange emotional entanglements with the fisherman, the successor of the Butterfly Sword, the leader of the Suzaku Gang, and the successor of the "Medicine King Shovel". After the joys and sorrows, the gang leader suddenly realized that he was determined to revive the "Suzaku Gang".