One piece x male reader: The legend of The Unkillable Gunslinger

In the world where there is pirates sailing through the seas, searching for the treasure called "The One Piece" which was hidden by the pirate King named Gol D. Roger before his death. After his death many pirates travelled to the Grand Line to search for this treasure so they will become the pirate King. Although they have selfish goals in mind but there is one who wishes to not become the Pirate king but rather given the One Piece treasure back to the people and surprise enough....he's not even a pirate himself.

His name is Y/n L/n aka "The Unkillable Gunslinger" and who is by far the most dangerous, most terrifying and most wanted by the marines as he has killed thousands or millions or marines on his own without dying and even he does get shot, he somehow gets healed within seconds.

Although they see him as a monster, in reality he's actually a person who has goodness in his heart as he protects citizens from either corrupt marines or evil pirates, helps their village and is respected by those some who sees him as a hero.

His journey begins when he mets a young pirate captain with stretchy powers by the name of Monkey D. Luffy. He will meet new friends, go on many adventures and confronting his trauma and overcoming his dark past. This is the tale, of The Unkillable Gunslinger.