I Am in One Piece, Starting from Sekiro and Becoming a Sword Master.

Can you believe that I traveled to the world of pirates while playing Sekiro? With the help of the Sekiro System, he will become the sword master of this world! Some people say he is a demon because he killed countless sword masters. Some people say that he is righteous because all the people he killed were pirates. He is the pinnacle of this world! And loneliness and isolation often accompany us throughout our lives. Never left! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.