Sword of the Pirate King | One Piece X Fern/Finn Male Reader

After becoming a Devil fruit eater and fighting back against the World Government, Y/n Mertens had been labelled a Grass Demon. After surviving a brutal attack and left the brink of death, his days of solitude are ended when rookie pirate Monkey D Luffy arrives on his island and gives him a place on his crew; the Straw Hat Pirates. Now, he sets sail with hopes of elevating his captain to be the "King of the Pirates" while also finding himself along the way.