Pirate Turns into a Knife

Traveling to the world of One Piece and becoming the execution knife used to execute Pirate King Roger, he awakens the system and continuously absorbs energy to evolve. The Demon King's Hammer, the Ten Fist Sword, the Kaio Divine Sword, the Divine Spear... Inherit the ability of the artifact and keep getting stronger. Break this world and destroy all things, just because you are my enemy. ... The author's own ideas are also added to this novel, and it is magically modified. If you like it, just read it. Everyone has their own preferences for radish and green vegetables... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.