Once upon a time a legendary swordsman was travelling around the world to take down every swordsman in mankind so that he can truly have the title of "THE LEGENDARY SWORDMAN",He was wielding a cursed metallic blade,In this world the power system is called stances the more intimidating it looks the stronger the stance,
Stances usually gives the user a buff.
In this world it is truly a "kill or be killed" type of world,one faithful day he saw the kingdom of stormhelm so he went inside and tried to find their strongest swordsman,and he found someone called Sei,he was wielding a dual katana but something was off,So he was about to ask Sei "Duel me you weakling"