one day a group of sailors called the Hashira who had high bounties on each of their head and also dangerous the members being Sanemi the swordsmen, shinobu the medic, Mitsuri the second cook, Obanai the lookout, Muichiro the boatswain, Gyomei the cargo loader and unloader, Rengoku the cook, Tengen the what he calls flashiest member... He's the musician, you (Giyuu) the navigator and the captain of the ship Master Ubuyashiki